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8c2b4e3c37
linux/drivers
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Thierry Reding 8c2b4e3c37 Revert "PCI: tegra: Do not allocate MSI target memory" 
This reverts commit d7bd554f27.

It turns out that Tegra20 has a bug in the implementation of the MSI
target address register (which is worked around by the existence of the
struct tegra_pcie_soc.msi_base_shift parameter) that restricts the MSI
target memory to the lower 32 bits of physical memory on that particular
generation. The offending patch causes a regression on TrimSlice, which
is a Tegra20-based device and has a PCI network interface card.

An initial, simpler fix was to change the MSI target address for Tegra20
only, but it was pointed out that the offending commit also prevents the
use of 32-bit only MSI capable devices, even on later chips. Technically
this was never guaranteed to work with the prior code in the first place
because the allocated page could have resided beyond the 4 GiB boundary,
but it is still possible that this could've introduced a regression.

The proper fix that was settled on is to select a fixed address within
the lowest 32 bits of physical address space that is otherwise unused,
but testing of that patch has provided mixed results that are not fully
understood yet.

Given all of the above and the relative urgency to get this fixed in
v4.13, revert the offending commit until a universal fix is found.

Fixes: d7bd554f27 ("PCI: tegra: Do not allocate MSI target memory")
Reported-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Reported-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org	# 4.13.x
2017-10-10 19:06:16 -05:00
..
accessibility
acpi dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
amba
android ANDROID: binder: don't queue async transactions to thread. 2017-09-01 09:22:50 +02:00
ata Merge branch 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2017-09-06 22:41:21 -07:00
atm
auxdisplay
base firmware: Restore support for built-in firmware 2017-09-16 10:58:48 -07:00
bcma
block The highlights include: 2017-09-12 20:03:53 -07:00
bluetooth
bus ARM: SoC driver updates for v4.14 2017-09-10 20:40:00 -07:00
cdrom
char dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
clk The diff is dominated by the Allwinner A10/A20 SoCs getting converted to 2017-09-13 11:04:14 -07:00
clocksource Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
connector
cpufreq dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
cpuidle Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
crypto dmaengine updates for 4.14-rc1 2017-09-07 14:03:05 -07:00
dax - Some request-based DM core and DM multipath fixes and cleanups 2017-09-14 13:43:16 -07:00
dca
devfreq
dio
dma dmaengine updates for 4.14-rc1 2017-09-07 14:03:05 -07:00
dma-buf
edac
eisa
extcon
firewire
firmware dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
fmc
fpga
fsi
gpio - New Drivers 2017-09-07 13:51:13 -07:00
gpu amd fixes pull 2017-09-15 17:52:52 -07:00
hid media updates for v4.14-rc1 2017-09-07 12:53:14 -07:00
hsi
hv Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-09-07 09:25:15 -07:00
hwmon dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
hwspinlock
hwtracing
i2c i2c: i2c-stm32f7: add driver 2017-09-14 17:34:43 +02:00
ide ide: fix IRQ assignment for PCI bus order probing 2017-10-03 14:03:31 -05:00
idle Power management updates for v4.14-rc1 2017-09-05 12:19:08 -07:00
iio - New Drivers 2017-09-07 13:51:13 -07:00
infiniband IB/mlx4: fix sprintf format warning 2017-09-13 18:53:15 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2017-09-16 11:24:26 -07:00
iommu IOMMU Updates for Linux v4.14 2017-09-09 15:03:24 -07:00
ipack
irqchip Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
isdn isdn: isdnloop: fix logic error in isdnloop_sendbuf 2017-09-07 20:03:54 -07:00
leds dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
lightnvm
macintosh powerpc/macintosh: constify wf_sensor_ops structures 2017-09-01 16:42:54 +10:00
mailbox Just behavorial changes to a controller driver: 2017-09-07 13:23:37 -07:00
mcb Char/Misc drivers for 4.14-rc1 2017-09-05 11:08:17 -07:00
md - Some request-based DM core and DM multipath fixes and cleanups 2017-09-14 13:43:16 -07:00
media Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-09-14 18:13:32 -07:00
memory ARM: SoC driver updates for v4.14 2017-09-10 20:40:00 -07:00
memstick
message
mfd dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
misc mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
mmc mmc: renesas_sdhi: Add r8a7743/5 support 2017-09-01 15:31:01 +02:00
mtd This pull request contains updates for UBI: 2017-09-16 12:08:10 -07:00
mux
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-16 11:28:59 -07:00
nfc
ntb
nubus
nvdimm - Some request-based DM core and DM multipath fixes and cleanups 2017-09-14 13:43:16 -07:00
nvme nvme-pci: implement the HMB entry number and size limitations 2017-09-11 12:29:40 -04:00
nvmem
of dma-mapping updates for 4.14: 2017-09-12 13:30:06 -07:00
oprofile
parisc
parport Char/Misc drivers for 4.14-rc1 2017-09-05 11:08:17 -07:00
pci Revert "PCI: tegra: Do not allocate MSI target memory" 2017-10-10 19:06:16 -05:00
pcmcia
perf
phy Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
pinctrl pinctrl/amd: save pin registers over suspend/resume 2017-09-12 15:58:45 +02:00
platform dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
pnp dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
power power supply and reset changes for the v4.14 series 2017-09-09 14:44:39 -07:00
powercap
pps drivers/pps: use surrounding "if PPS" to remove numerous dependency checks 2017-09-08 18:26:51 -07:00
ps3
ptp
pwm pwm: Changes for v4.14-rc1 2017-09-11 13:04:32 -07:00
rapidio
ras
regulator - New Drivers 2017-09-07 13:51:13 -07:00
remoteproc rpmsg updates for v4.14 2017-09-09 14:34:38 -07:00
reset Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
rpmsg rpmsg: glink: initialize ret to zero to ensure error status check is correct 2017-09-04 10:52:30 -07:00
rtc RTC for 4.14 2017-09-13 10:56:00 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-09-12 06:01:59 -07:00
sbus
scsi SCSI misc on 20170913 2017-09-13 10:47:14 -07:00
sfi
sh
sn
soc Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
spi ACPI updates for v4.14-rc1 2017-09-05 12:45:03 -07:00
spmi
ssb
staging Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-09-14 18:54:01 -07:00
target Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-09-14 18:13:32 -07:00
tc
tee
thermal Merge branches 'thermal-core', 'thermal-soc', 'thermal-intel' and 'const-thermal-zone-structure' into next 2017-09-08 11:20:04 +08:00
thunderbolt ACPI updates for v4.14-rc1 2017-09-05 12:45:03 -07:00
tty dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
uio
usb Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-09-14 18:13:32 -07:00
uwb
vfio
vhost lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
video fbdev changes for v4.14: 2017-09-14 13:33:33 -07:00
virt
virtio SCSI misc on 20170907 2017-09-07 21:11:05 -07:00
vlynq
vme
w1 power supply and reset changes for the v4.14 series 2017-09-09 14:44:39 -07:00
watchdog Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2017-09-15 20:43:33 -07:00
xen mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
zorro
Kconfig
Makefile