Commit Graph

601711 Commits

Author SHA1 Message Date
Geert Uytterhoeven
affe802c39 ARM: dts: lager: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /keyboard/button@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /keyboard/button@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /keyboard/button@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /keyboard/button@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /fixedregulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /i2c@8 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:13 +09:00
Geert Uytterhoeven
8788b2c4f4 ARM: dts: kzm9g: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:12 +09:00
Geert Uytterhoeven
815be9c2a4 ARM: dts: kzm9d: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /pfc@e0140200/serial@e1030000 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpio_keys/button@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpio_keys/button@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpio_keys/button@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpio_keys/button@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:12 +09:00
Geert Uytterhoeven
a704b2769f ARM: dts: koelsch: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@5 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:12 +09:00
Geert Uytterhoeven
b6dfc0d401 ARM: dts: gose: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@5 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:12 +09:00
Geert Uytterhoeven
4f4942bc6c ARM: dts: genmai: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:12 +09:00
Geert Uytterhoeven
40cf49f3a4 ARM: dts: bockw: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /fixedregulator@0 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:11 +09:00
Geert Uytterhoeven
c9c3b7c302 ARM: dts: armadillo800eva: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /i2c@2 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:11 +09:00
Geert Uytterhoeven
4706147211 ARM: dts: ape6evm: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /regulator@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /regulator@3 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:11 +09:00
Geert Uytterhoeven
1178814b0f ARM: dts: sh73a0: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller has a reg or ranges property, but no unit name

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:11 +09:00
Geert Uytterhoeven
34ea4b4a82 ARM: dts: r8a7794: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller@1 has a unit name, but no reg property

Move the cache-controller node under the cpus node, and make its unit
name and reg property match the MPIDR value.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:11 +09:00
Geert Uytterhoeven
ad53f5f00b ARM: dts: r8a7793: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@9 has a unit name, but no reg property

Move the cache-controller node under the cpus node, and make its unit
name and reg property match the MPIDR values.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:10 +09:00
Geert Uytterhoeven
6f9314ce25 ARM: dts: r8a7791: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /cache-controller@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@9 has a unit name, but no reg property

Move the cache-controller node under the cpus node, and make its unit
name and reg property match the MPIDR values.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:10 +09:00
Geert Uytterhoeven
2c3de36700 ARM: dts: r8a7790: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /cache-controller@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,dvc/dvc@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,mix/mix@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ctu/ctu@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,src/src@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ec500000/rcar_sound,ssi/ssi@9 has a unit name, but no reg property

Move the cache-controller nodes under the cpus node, and make their unit
names and reg properties match the MPIDR values.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:10 +09:00
Geert Uytterhoeven
51f20c9338 ARM: dts: r8a7778: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,src/src@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /sound@ffd90000/rcar_sound,ssi/ssi@9 has a unit name, but no reg property

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:10 +09:00
Geert Uytterhoeven
28c8c0aa09 ARM: dts: r8a7740: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller has a reg or ranges property, but no unit name

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:09 +09:00
Geert Uytterhoeven
b0da45c60d ARM: dts: r8a73a4: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /cache-controller@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /cache-controller@1 has a unit name, but no reg property

Move the cache-controller nodes under the cpus node, and make their
unit names and reg properties match the MPIDR values.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:09 +09:00
Geert Uytterhoeven
33df275363 ARM: dts: emev2: Fix W=1 dtc warnings
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic0_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic0_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic1_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic1_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usia_u0_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u1_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u2_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u3_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usia_u0_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u1_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u2_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u3_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/sti_sclk has a reg or ranges property, but no unit name

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:09 +09:00
Geert Uytterhoeven
79c530ed4d ARM: dts: r8a7794: Remove nonexistent thermal sensor clock
According to the latest information, there is no thermal IP block
present on the r8a7794 SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:09 +09:00
Niklas Söderlund
b38605e9aa ARM: dts: r8a7794: Reference both DMA controllers
R-Car Gen2 have two DMA controllers, which are equivalent. Add
references to both dmac0 and dmac1 so the driver can choose which one to
use.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:09 +09:00
Niklas Söderlund
a858cd49fe ARM: dts: r8a7793: Reference both DMA controllers
R-Car Gen2 have two DMA controllers, which are equivalent. Add
references to both dmac0 and dmac1 so the driver can choose which one to
use.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:08 +09:00
Niklas Söderlund
4aed4c9f01 ARM: dts: r8a7791: Reference both DMA controllers
R-Car Gen2 have two DMA controllers, which are equivalent. Add
references to both dmac0 and dmac1 so the driver can choose which one to
use.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:08 +09:00
Niklas Söderlund
badf8570c6 ARM: dts: r8a7790: Reference both DMA controllers
R-Car Gen2 have two DMA controllers, which are equivalent. Add
references to both dmac0 and dmac1 so the driver can choose which one to
use.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:08 +09:00
Geert Uytterhoeven
1eed15e411 ARM: dts: r8a7790: Correct unit names for cpu nodes
Make the unit names for the cpu nodes match their reg properties.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:08 +09:00
Geert Uytterhoeven
d5bb5dcc58 ARM: dts: kzm9g: SCIFA4 supports RTS/CTS hardware flow control
On the KZM-A9-GT development board, the RTS and CTS pins of the debug
console SCIFA4 are wired to the CP2102 Serial-USB bridge.  Reflect
this in the DTS by adding the "uart-has-rtscts" property to the scifa4
device node.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:07 +09:00
Geert Uytterhoeven
388e9f592c ARM: dts: bockw: SCIF0 supports RTS/CTS hardware flow control
On the BOCK-W development board, the RTS and CTS pins of the console
SCIF0 are wired to the "product serial" connector.  Reflect this in the
DTS by adding the "uart-has-rtscts" property to the scif0 device node.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:07 +09:00
Ulrich Hecht
d9739aab20 ARM: dts: r8a7793: Add MMCIF0
Same as on r8a7791.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-05-30 09:37:07 +09:00
Linus Torvalds
1a695a905c Linux 4.7-rc1 2016-05-29 09:29:24 -07:00
George Spelvin
e0ab7af9bd hash_string: Fix zero-length case for !DCACHE_WORD_ACCESS
The self-test was updated to cover zero-length strings; the function
needs to be updated, too.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Fixes: fcfd2fbf22 ("fs/namei.c: Add hashlen_string() function")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-29 07:33:47 -07:00
George Spelvin
f2a031b66e Rename other copy of hash_string to hashlen_string
The original name was simply hash_string(), but that conflicted with a
function with that name in drivers/base/power/trace.c, and I decided
that calling it "hashlen_" was better anyway.

But you have to do it in two places.

[ This caused build errors for architectures that don't define
  CONFIG_DCACHE_WORD_ACCESS   - Linus ]

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: fcfd2fbf22 ("fs/namei.c: Add hashlen_string() function")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-28 22:34:33 -07:00
Mikulas Patocka
037369b872 hpfs: implement the show_options method
The HPFS filesystem used generic_show_options to produce string that is
displayed in /proc/mounts.  However, there is a problem that the options
may disappear after remount.  If we mount the filesystem with option1
and then remount it with option2, /proc/mounts should show both option1
and option2, however it only shows option2 because the whole option
string is replaced with replace_mount_options in hpfs_remount_fs.

To fix this bug, implement the hpfs_show_options function that prints
options that are currently selected.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-28 16:50:24 -07:00
Mikulas Patocka
01d6e08711 affs: fix remount failure when there are no options changed
Commit c8f33d0bec ("affs: kstrdup() memory handling") checks if the
kstrdup function returns NULL due to out-of-memory condition.

However, if we are remounting a filesystem with no change to
filesystem-specific options, the parameter data is NULL.  In this case,
kstrdup returns NULL (because it was passed NULL parameter), although no
out of memory condition exists.  The mount syscall then fails with
ENOMEM.

This patch fixes the bug.  We fail with ENOMEM only if data is non-NULL.

The patch also changes the call to replace_mount_options - if we didn't
pass any filesystem-specific options, we don't call
replace_mount_options (thus we don't erase existing reported options).

Fixes: c8f33d0bec ("affs: kstrdup() memory handling")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org	# v4.1+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-28 16:50:24 -07:00
Mikulas Patocka
44d51706b4 hpfs: fix remount failure when there are no options changed
Commit ce657611ba ("hpfs: kstrdup() out of memory handling") checks if
the kstrdup function returns NULL due to out-of-memory condition.

However, if we are remounting a filesystem with no change to
filesystem-specific options, the parameter data is NULL.  In this case,
kstrdup returns NULL (because it was passed NULL parameter), although no
out of memory condition exists.  The mount syscall then fails with
ENOMEM.

This patch fixes the bug.  We fail with ENOMEM only if data is non-NULL.

The patch also changes the call to replace_mount_options - if we didn't
pass any filesystem-specific options, we don't call
replace_mount_options (thus we don't erase existing reported options).

Fixes: ce657611ba ("hpfs: kstrdup() out of memory handling")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-28 16:50:24 -07:00
Linus Torvalds
4029632c34 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull more MIPS updates from Ralf Baechle:
 "This is the secondnd batch of MIPS patches for 4.7. Summary:

  CPS:
   - Copy EVA configuration when starting secondary VPs.

  EIC:
   - Clear Status IPL.

  Lasat:
   - Fix a few off by one bugs.

  lib:
   - Mark intrinsics notrace.  Not only are the intrinsics
     uninteresting, it would cause infinite recursion.

  MAINTAINERS:
   - Add file patterns for MIPS BRCM device tree bindings.
   - Add file patterns for mips device tree bindings.

  MT7628:
   - Fix MT7628 pinmux typos.
   - wled_an pinmux gpio.
   - EPHY LEDs pinmux support.

  Pistachio:
   - Enable KASLR

  VDSO:
   - Build microMIPS VDSO for microMIPS kernels.
   - Fix aliasing warning by building with `-fno-strict-aliasing' for
     debugging but also tracing them might result in recursion.

  Misc:
   - Add missing FROZEN hotplug notifier transitions.
   - Fix clk binding example for varioius PIC32 devices.
   - Fix cpu interrupt controller node-names in the DT files.
   - Fix XPA CPU feature separation.
   - Fix write_gc0_* macros when writing zero.
   - Add inline asm encoding helpers.
   - Add missing VZ accessor microMIPS encodings.
   - Fix little endian microMIPS MSA encodings.
   - Add 64-bit HTW fields and fix its configuration.
   - Fix sigreturn via VDSO on microMIPS kernel.
   - Lots of typo fixes.
   - Add definitions of SegCtl registers and use them"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (49 commits)
  MIPS: Add missing FROZEN hotplug notifier transitions
  MIPS: Build microMIPS VDSO for microMIPS kernels
  MIPS: Fix sigreturn via VDSO on microMIPS kernel
  MIPS: devicetree: fix cpu interrupt controller node-names
  MIPS: VDSO: Build with `-fno-strict-aliasing'
  MIPS: Pistachio: Enable KASLR
  MIPS: lib: Mark intrinsics notrace
  MIPS: Fix 64-bit HTW configuration
  MIPS: Add 64-bit HTW fields
  MAINTAINERS: Add file patterns for mips device tree bindings
  MAINTAINERS: Add file patterns for mips brcm device tree bindings
  MIPS: Simplify DSP instruction encoding macros
  MIPS: Add missing tlbinvf/XPA microMIPS encodings
  MIPS: Fix little endian microMIPS MSA encodings
  MIPS: Add missing VZ accessor microMIPS encodings
  MIPS: Add inline asm encoding helpers
  MIPS: Spelling fix lets -> let's
  MIPS: VR41xx: Fix typo
  MIPS: oprofile: Fix typo
  MIPS: math-emu: Fix typo
  ...
2016-05-28 16:41:39 -07:00
Guenter Roeck
d66492bce1 fs: fix binfmt_aout.c build error
Various builds (such as i386:allmodconfig) fail with

  fs/binfmt_aout.c:133:2: error: expected identifier or '(' before 'return'
  fs/binfmt_aout.c:134:1: error: expected identifier or '(' before '}' token

[ Oops. My bad, I had stupidly thought that "allmodconfig" covered this
  on x86-64 too, but it obviously doesn't.  Egg on my face.  - Linus ]

Fixes: 5d22fc25d4 ("mm: remove more IS_ERR_VALUE abuses")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-28 16:34:59 -07:00
Linus Torvalds
7e0fb73c52 Merge branch 'hash' of git://ftp.sciencehorizons.net/linux
Pull string hash improvements from George Spelvin:
 "This series does several related things:

   - Makes the dcache hash (fs/namei.c) useful for general kernel use.

     (Thanks to Bruce for noticing the zero-length corner case)

   - Converts the string hashes in <linux/sunrpc/svcauth.h> to use the
     above.

   - Avoids 64-bit multiplies in hash_64() on 32-bit platforms.  Two
     32-bit multiplies will do well enough.

   - Rids the world of the bad hash multipliers in hash_32.

     This finishes the job started in commit 689de1d6ca ("Minimal
     fix-up of bad hashing behavior of hash_64()")

     The vast majority of Linux architectures have hardware support for
     32x32-bit multiply and so derive no benefit from "simplified"
     multipliers.

     The few processors that do not (68000, h8/300 and some models of
     Microblaze) have arch-specific implementations added.  Those
     patches are last in the series.

   - Overhauls the dcache hash mixing.

     The patch in commit 0fed3ac866 ("namei: Improve hash mixing if
     CONFIG_DCACHE_WORD_ACCESS") was an off-the-cuff suggestion.
     Replaced with a much more careful design that's simultaneously
     faster and better.  (My own invention, as there was noting suitable
     in the literature I could find.  Comments welcome!)

   - Modify the hash_name() loop to skip the initial HASH_MIX().  This
     would let us salt the hash if we ever wanted to.

   - Sort out partial_name_hash().

     The hash function is declared as using a long state, even though
     it's truncated to 32 bits at the end and the extra internal state
     contributes nothing to the result.  And some callers do odd things:

      - fs/hfs/string.c only allocates 32 bits of state
      - fs/hfsplus/unicode.c uses it to hash 16-bit unicode symbols not bytes

   - Modify bytemask_from_count to handle inputs of 1..sizeof(long)
     rather than 0..sizeof(long)-1.  This would simplify users other
     than full_name_hash"

  Special thanks to Bruce Fields for testing and finding bugs in v1.  (I
  learned some humbling lessons about "obviously correct" code.)

  On the arch-specific front, the m68k assembly has been tested in a
  standalone test harness, I've been in contact with the Microblaze
  maintainers who mostly don't care, as the hardware multiplier is never
  omitted in real-world applications, and I haven't heard anything from
  the H8/300 world"

* 'hash' of git://ftp.sciencehorizons.net/linux:
  h8300: Add <asm/hash.h>
  microblaze: Add <asm/hash.h>
  m68k: Add <asm/hash.h>
  <linux/hash.h>: Add support for architecture-specific functions
  fs/namei.c: Improve dcache hash function
  Eliminate bad hash multipliers from hash_32() and  hash_64()
  Change hash_64() return value to 32 bits
  <linux/sunrpc/svcauth.h>: Define hash_str() in terms of hashlen_string()
  fs/namei.c: Add hashlen_string() function
  Pull out string hash to <linux/stringhash.h>
2016-05-28 16:15:25 -07:00
George Spelvin
4684fe9530 h8300: Add <asm/hash.h>
This will improve the performance of hash_32() and hash_64(), but due
to complete lack of multi-bit shift instructions on H8, performance will
still be bad in surrounding code.

Designing H8-specific hash algorithms to work around that is a separate
project.  (But if the maintainers would like to get in touch...)

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: uclinux-h8-devel@lists.sourceforge.jp
2016-05-28 15:48:58 -04:00
George Spelvin
7b13277b68 microblaze: Add <asm/hash.h>
Microblaze is an FPGA soft core that can be configured various ways.

If it is configured without a multiplier, the standard __hash_32()
will require a call to __mulsi3, which is a slow software loop.

Instead, use a shift-and-add sequence for the constant multiply.
GCC knows how to do this, but it's not as clever as some.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
2016-05-28 15:48:58 -04:00
George Spelvin
14c44b95b3 m68k: Add <asm/hash.h>
This provides a multiply by constant GOLDEN_RATIO_32 = 0x61C88647
for the original mc68000, which lacks a 32x32-bit multiply instruction.

Yes, the amount of optimization effort put in is excessive. :-)

Shift-add chain found by Yevgen Voronenko's Hcub algorithm at
http://spiral.ece.cmu.edu/mcm/gen.html

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Philippe De Muyter <phdm@macq.eu>
Cc: linux-m68k@lists.linux-m68k.org
2016-05-28 15:48:57 -04:00
George Spelvin
468a942852 <linux/hash.h>: Add support for architecture-specific functions
This is just the infrastructure; there are no users yet.

This is modelled on CONFIG_ARCH_RANDOM; a CONFIG_ symbol declares
the existence of <asm/hash.h>.

That file may define its own versions of various functions, and define
HAVE_* symbols (no CONFIG_ prefix!) to suppress the generic ones.

Included is a self-test (in lib/test_hash.c) that verifies the basics.
It is NOT in general required that the arch-specific functions compute
the same thing as the generic, but if a HAVE_* symbol is defined with
the value 1, then equality is tested.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Philippe De Muyter <phdm@macq.eu>
Cc: linux-m68k@lists.linux-m68k.org
Cc: Alistair Francis <alistai@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: uclinux-h8-devel@lists.sourceforge.jp
2016-05-28 15:48:31 -04:00
George Spelvin
2a18da7a9c fs/namei.c: Improve dcache hash function
Patch 0fed3ac866 improved the hash mixing, but the function is slower
than necessary; there's a 7-instruction dependency chain (10 on x86)
each loop iteration.

Word-at-a-time access is a very tight loop (which is good, because
link_path_walk() is one of the hottest code paths in the entire kernel),
and the hash mixing function must not have a longer latency to avoid
slowing it down.

There do not appear to be any published fast hash functions that:
1) Operate on the input a word at a time, and
2) Don't need to know the length of the input beforehand, and
3) Have a single iterated mixing function, not needing conditional
   branches or unrolling to distinguish different loop iterations.

One of the algorithms which comes closest is Yann Collet's xxHash, but
that's two dependent multiplies per word, which is too much.

The key insights in this design are:

1) Barring expensive ops like multiplies, to diffuse one input bit
   across 64 bits of hash state takes at least log2(64) = 6 sequentially
   dependent instructions.  That is more cycles than we'd like.
2) An operation like "hash ^= hash << 13" requires a second temporary
   register anyway, and on a 2-operand machine like x86, it's three
   instructions.
3) A better use of a second register is to hold a two-word hash state.
   With careful design, no temporaries are needed at all, so it doesn't
   increase register pressure.  And this gets rid of register copying
   on 2-operand machines, so the code is smaller and faster.
4) Using two words of state weakens the requirement for one-round mixing;
   we now have two rounds of mixing before cancellation is possible.
5) A two-word hash state also allows operations on both halves to be
   done in parallel, so on a superscalar processor we get more mixing
   in fewer cycles.

I ended up using a mixing function inspired by the ChaCha and Speck
round functions.  It is 6 simple instructions and 3 cycles per iteration
(assuming multiply by 9 can be done by an "lea" instruction):

		x ^= *input++;
	y ^= x;	x = ROL(x, K1);
	x += y;	y = ROL(y, K2);
	y *= 9;

Not only is this reversible, two consecutive rounds are reversible:
if you are given the initial and final states, but not the intermediate
state, it is possible to compute both input words.  This means that at
least 3 words of input are required to create a collision.

(It also has the property, used by hash_name() to avoid a branch, that
it hashes all-zero to all-zero.)

The rotate constants K1 and K2 were found by experiment.  The search took
a sample of random initial states (I used 1023) and considered the effect
of flipping each of the 64 input bits on each of the 128 output bits two
rounds later.  Each of the 8192 pairs can be considered a biased coin, and
adding up the Shannon entropy of all of them produces a score.

The best-scoring shifts also did well in other tests (flipping bits in y,
trying 3 or 4 rounds of mixing, flipping all 64*63/2 pairs of input bits),
so the choice was made with the additional constraint that the sum of the
shifts is odd and not too close to the word size.

The final state is then folded into a 32-bit hash value by a less carefully
optimized multiply-based scheme.  This also has to be fast, as pathname
components tend to be short (the most common case is one iteration!), but
there's some room for latency, as there is a fair bit of intervening logic
before the hash value is used for anything.

(Performance verified with "bonnie++ -s 0 -n 1536:-2" on tmpfs.  I need
a better benchmark; the numbers seem to show a slight dip in performance
between 4.6.0 and this patch, but they're too noisy to quote.)

Special thanks to Bruce fields for diligent testing which uncovered a
nasty fencepost error in an earlier version of this patch.

[checkpatch.pl formatting complaints noted and respectfully disagreed with.]

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Tested-by: J. Bruce Fields <bfields@redhat.com>
2016-05-28 15:45:29 -04:00
George Spelvin
ef703f49a6 Eliminate bad hash multipliers from hash_32() and hash_64()
The "simplified" prime multipliers made very bad hash functions, so get rid
of them.  This completes the work of 689de1d6ca.

To avoid the inefficiency which was the motivation for the "simplified"
multipliers, hash_64() on 32-bit systems is changed to use a different
algorithm.  It makes two calls to hash_32() instead.

drivers/media/usb/dvb-usb-v2/af9015.c uses the old GOLDEN_RATIO_PRIME_32
for some horrible reason, so it inherits a copy of the old definition.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
2016-05-28 15:42:51 -04:00
George Spelvin
92d567740f Change hash_64() return value to 32 bits
That's all that's ever asked for, and it makes the return
type of hash_long() consistent.

It also allows (upcoming patch) an optimized implementation
of hash_64 on 32-bit machines.

I tried adding a BUILD_BUG_ON to ensure the number of bits requested
was never more than 32 (most callers use a compile-time constant), but
adding <linux/bug.h> to <linux/hash.h> breaks the tools/perf compiler
unless tools/perf/MANIFEST is updated, and understanding that code base
well enough to update it is too much trouble.  I did the rest of an
allyesconfig build with such a check, and nothing tripped.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
2016-05-28 15:42:51 -04:00
George Spelvin
917ea166f4 <linux/sunrpc/svcauth.h>: Define hash_str() in terms of hashlen_string()
Finally, the first use of previous two patches: eliminate the
separate ad-hoc string hash functions in the sunrpc code.

Now hash_str() is a wrapper around hash_string(), and hash_mem() is
likewise a wrapper around full_name_hash().

Note that sunrpc code *does* call hash_mem() with a zero length, which
is why the previous patch needed to handle that in full_name_hash().
(Thanks, Bruce, for finding that!)

This also eliminates the only caller of hash_long which asks for
more than 32 bits of output.

The comment about the quality of hashlen_string() and full_name_hash()
is jumping the gun by a few patches; they aren't very impressive now,
but will be improved greatly later in the series.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Tested-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: J. Bruce Fields <bfields@redhat.com>
Cc: Jeff Layton <jlayton@poochiereds.net>
Cc: linux-nfs@vger.kernel.org
2016-05-28 15:42:50 -04:00
George Spelvin
fcfd2fbf22 fs/namei.c: Add hashlen_string() function
We'd like to make more use of the highly-optimized dcache hash functions
throughout the kernel, rather than have every subsystem create its own,
and a function that hashes basic null-terminated strings is required
for that.

(The name is to emphasize that it returns both hash and length.)

It's actually useful in the dcache itself, specifically d_alloc_name().
Other uses in the next patch.

full_name_hash() is also tweaked to make it more generally useful:
1) Take a "char *" rather than "unsigned char *" argument, to
   be consistent with hash_name().
2) Handle zero-length inputs.  If we want more callers, we don't want
   to make them worry about corner cases.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
2016-05-28 15:42:50 -04:00
George Spelvin
f4bcbe792b Pull out string hash to <linux/stringhash.h>
... so they can be used without the rest of <linux/dcache.h>

The hashlen_* macros will make sense next patch.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
2016-05-28 15:42:40 -04:00
Linus Torvalds
4e8440b3b6 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
 "A fix for a regression introduced yesterday.

  The regression didn't show up here locally because I did not have
  PAGE_POISONING enabled.  And buildbots discovered this only after it
  hit your tree.  Thanks to Dan for the quick response"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: dev: use after free in detach
2016-05-28 12:38:50 -07:00
Linus Torvalds
a1842b2b6f platform/chrome: Driver and binding changes for 4.7
A handful of changes this merge window:
 
  - A few patches to fix probing and configuration of pstore
  - A few patches adding Elan touchpad registration on a few devices
  - EC changes: a security fix dealing with max message sizes and addition
    of compat_ioctl support.
  - Keyboard backlight control support
 
 There was also an accidential duplicate registration of trackpads on 'Leon',
 which was reverted just recently.
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Merge tag 'chrome-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform

Pull chrome platform updates from Olof Johansson
 "A handful of Chrome driver and binding changes this merge window:

   - a few patches to fix probing and configuration of pstore

   - a few patches adding Elan touchpad registration on a few devices

   - EC changes: a security fix dealing with max message sizes and
     addition of compat_ioctl support.

   - keyboard backlight control support

  There was also an accidential duplicate registration of trackpads on
  'Leon', which was reverted just recently"

* tag 'chrome-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
  Revert "platform/chrome: chromeos_laptop: Add Leon Touch"
  platform/chrome: chromeos_laptop - Add Elan touchpad for Wolf
  platform/chrome: chromeos_laptop - Add elan trackpad option for C720
  platform/chrome: cros_ec_dev - Populate compat_ioctl
  platform/chrome: cros_ec_lightbar - use name instead of ID to hide lightbar attributes
  platform/chrome: cros_ec_dev - Fix security issue
  platform/chrome: Add Chrome OS keyboard backlight LEDs support
  platform/chrome: use to_platform_device()
  platform/chrome: pstore: Move to larger record size.
  platform/chrome: pstore: probe for ramoops buffer using acpi
  platform/chrome: chromeos_laptop: Add Leon Touch
2016-05-28 12:32:01 -07:00
Linus Torvalds
0723ab4a97 sound updates #2 for 4.7-rc1
This is the second update round for 4.7-rc1.  Most of changes are
 about the pending ASoC updates and fixes, including a few new
 drivers.  Below are some highlights:
 
 ASoC:
 - New drivers for MAX98371 and TAS5720
 - SPI support for TLV320AIC32x4, along with the module split
 - TDM support for STI Uniperf IPs
 - Remaining topology API fixes / updates
 
 HDA:
 - A couple of Dell quirks and new Realtek codec support
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Merge tag 'sound-4.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull more sound updates from Takashi Iwai:
 "This is the second update round for 4.7-rc1.  Most of changes are
  about the pending ASoC updates and fixes, including a few new drivers.
  Below are some highlights:

  ASoC:
   - New drivers for MAX98371 and TAS5720
   - SPI support for TLV320AIC32x4, along with the module split
   - TDM support for STI Uniperf IPs
   - Remaining topology API fixes / updates

  HDA:
   - A couple of Dell quirks and new Realtek codec support"

* tag 'sound-4.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (63 commits)
  ALSA: hda - Fix headset mic detection problem for one Dell machine
  spi: spi-ep93xx: Fix the PTR_ERR() argument
  ALSA: hda/realtek - Add support for ALC295/ALC3254
  ASoC: kirkwood: fix build failure
  ALSA: hda - Fix headphone noise on Dell XPS 13 9360
  ASoC: ak4642: Enable cache usage to fix crashes on resume
  ASoC: twl6040: Disconnect AUX output pads on digital mute
  ASoC: tlv320aic32x4: Properly implement the positive and negative pins into the mixers
  rcar: src: skip disabled-SRC nodes
  ASoC: max98371 Remove duplicate entry in max98371_reg
  ASoC: twl6040: Select LPPLL during standby
  ASoC: rsnd: don't use prohibited number to PDMACHCRn.SRS
  ASoC: simple-card: Add pm callbacks to platform driver
  ASoC: pxa: Fix module autoload for platform drivers
  ASoC: topology: Fix memory leak in widget creation
  ASoC: Add max98371 codec driver
  ASoC: rsnd: count .probe/.remove for rsnd_mod_call()
  ASoC: topology: Check size mismatch of ABI objects before parsing
  ASoC: topology: Check failure to create a widget
  ASoC: add support for TAS5720 digital amplifier
  ...
2016-05-28 12:23:12 -07:00
Linus Torvalds
9ba55cf7cf Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
 "Here are the outstanding target pending updates for v4.7-rc1.

  The highlights this round include:

   - Allow external PR/ALUA metadata path be defined at runtime via top
     level configfs attribute (Lee)
   - Fix target session shutdown bug for ib_srpt multi-channel (hch)
   - Make TFO close_session() and shutdown_session() optional (hch)
   - Drop se_sess->sess_kref + convert tcm_qla2xxx to internal kref
     (hch)
   - Add tcm_qla2xxx endpoint attribute for basic FC jammer (Laurence)
   - Refactor iscsi-target RX/TX PDU encode/decode into common code
     (Varun)
   - Extend iscsit_transport with xmit_pdu, release_cmd, get_rx_pdu,
     validate_parameters, and get_r2t_ttt for generic ISO offload
     (Varun)
   - Initial merge of cxgb iscsi-segment offload target driver (Varun)

  The bulk of the changes are Chelsio's new driver, along with a number
  of iscsi-target common code improvements made by Varun + Co along the
  way"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (29 commits)
  iscsi-target: Fix early sk_data_ready LOGIN_FLAGS_READY race
  cxgbit: Use type ISCSI_CXGBIT + cxgbit tpg_np attribute
  iscsi-target: Convert transport drivers to signal rdma_shutdown
  iscsi-target: Make iscsi_tpg_np driver show/store use generic code
  tcm_qla2xxx Add SCSI command jammer/discard capability
  iscsi-target: graceful disconnect on invalid mapping to iovec
  target: need_to_release is always false, remove redundant check and kfree
  target: remove sess_kref and ->shutdown_session
  iscsi-target: remove usage of ->shutdown_session
  tcm_qla2xxx: introduce a private sess_kref
  target: make close_session optional
  target: make ->shutdown_session optional
  target: remove acl_stop
  target: consolidate and fix session shutdown
  cxgbit: add files for cxgbit.ko
  iscsi-target: export symbols
  iscsi-target: call complete on conn_logout_comp
  iscsi-target: clear tx_thread_active
  iscsi-target: add new offload transport type
  iscsi-target: use conn_transport->transport_type in text rsp
  ...
2016-05-28 12:04:17 -07:00