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e6f34cea56
linux/drivers/i2c/busses
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Josef Ahmad e6f34cea56 i2c: designware: fix RX FIFO overrun 
i2c_dw_xfer_msg() pushes a number of bytes to transmit/receive
to/from the bus into the TX FIFO.
For master-rx transactions, the maximum amount of data that can be
received is calculated depending solely on TX and RX FIFO load.

This is racy - TX FIFO may contain master-rx data yet to be
processed, which will eventually land into the RX FIFO. This
data is not taken into account and the function may request more
data than the controller is actually capable of storing.

This patch ensures the driver takes into account the outstanding
master-rx data in TX FIFO to prevent RX FIFO overrun.

Signed-off-by: Josef Ahmad <josef.ahmad@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
2013-05-17 10:33:11 +02:00
..
i2c-acorn.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
i2c-ali15x3.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ali1535.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ali1563.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-amd756-s4882.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-amd756.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-amd8111.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-at91.c i2c: at91: convert to dma_request_slave_channel_compat() 2013-04-16 11:10:14 +02:00
i2c-au1550.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-bcm2835.c i2c: add bcm2835 driver 2013-02-12 11:33:59 +01:00
i2c-bfin-twi.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-cbus-gpio.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-cpm.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-davinci.c i2c: davinci: drop superfluous {get|put}_device 2013-04-19 20:21:40 +02:00
i2c-designware-core.c i2c: designware: fix RX FIFO overrun 2013-05-17 10:33:11 +02:00
i2c-designware-core.h i2c: designware: fix RX FIFO overrun 2013-05-17 10:33:11 +02:00
i2c-designware-pcidrv.c i2c: designware-pci: drop superfluous {get|put}_device 2013-04-19 20:22:10 +02:00
i2c-designware-platdrv.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-05-02 14:38:53 -07:00
i2c-diolan-u2c.c i2c: diolan-u2c: Fix master_xfer return code 2012-08-18 12:27:27 +02:00
i2c-eg20t.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-elektor.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-gpio.c i2c: gpio: Add support for deferred probing 2013-03-27 08:51:50 +01:00
i2c-highlander.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-hydra.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-i801.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-ibm_iic.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-ibm_iic.h
i2c-imx.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
i2c-intel-mid.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-iop3xx.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-iop3xx.h i2c-iop3xx: add iomem annotation 2011-01-04 00:53:37 +00:00
i2c-isch.c i2c: isch: Add module parameter for backbone clock rate if divider is unset 2013-02-11 15:53:49 +01:00
i2c-ismt.c i2c: ismt: remove duplicate const 2013-03-24 10:30:56 +01:00
i2c-mpc.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-mv64xxx.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-mxs.c ARM: arm-soc device tree changes, part 2 2013-05-07 11:06:17 -07:00
i2c-nforce2-s4985.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-nforce2.c i2c: nforce2: fix coding style issues 2013-01-28 05:26:42 +01:00
i2c-nomadik.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-nuc900.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-ocores.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
i2c-octeon.c i2c: octeon: use HZ in timeout value 2013-04-23 18:29:11 +02:00
i2c-omap.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
i2c-parport-light.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-parport.c i2c-parport: i2c_parport_irq can be static 2012-10-05 22:23:53 +02:00
i2c-parport.h i2c-parport: Various cleanups 2011-05-24 20:58:49 +02:00
i2c-pasemi.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-pca-isa.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-pca-platform.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-piix4.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-pmcmsp.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-pnx.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-powermac.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-puv3.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-05-02 14:38:53 -07:00
i2c-pxa-pci.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-pxa.c i2c: pxa: Use i2c-core to get bus number now 2013-03-24 10:30:54 +01:00
i2c-rcar.c i2c: Convert to devm_ioremap_resource() 2013-01-24 13:33:23 -08:00
i2c-s3c2410.c i2c: s3c2410: Add SMBus emulation for block read 2013-04-09 11:23:05 +02:00
i2c-s6000.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-s6000.h i2c: Change mail address of Oskar Schirmer 2012-05-17 15:15:56 +02:00
i2c-scmi.c ACPI: Remove useless type argument of driver .remove() operation 2013-01-26 00:37:24 +01:00
i2c-sh7760.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-sh_mobile.c i2c: sh_mobile: don't send a stop condition by default inside transfers 2013-02-10 19:55:24 +01:00
i2c-sibyte.c i2c/mips: Fix error return codes from Sibyte i2c bus driver 2010-07-10 09:42:47 +02:00
i2c-simtec.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-sirf.c Merge 3.8-rc5 into driver-core-next 2013-01-25 21:06:30 -08:00
i2c-sis96x.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-sis630.c i2c: sis630: checkpatch cleanup 2013-02-11 15:59:40 +01:00
i2c-sis5595.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-stu300.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
i2c-taos-evm.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-tegra.c i2c: tegra: assume CONFIG_OF, remove platform data 2013-03-24 10:30:55 +01:00
i2c-tiny-usb.c i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter 2012-07-24 14:13:59 +02:00
i2c-versatile.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
i2c-via.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-viapro.c i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
i2c-viperboard.c i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
i2c-xiic.c i2c: xiic: must always write 16-bit words to TX_FIFO 2013-04-23 20:18:34 +02:00
i2c-xlr.c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
Kconfig Convert selectors of GENERIC_GPIO to GPIOLIB 2013-04-16 18:47:14 +09:00
Makefile i2c: add bcm2835 driver 2013-02-12 11:33:59 +01:00
scx200_acb.c i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls 2013-02-22 00:25:50 +01:00
scx200_i2c.c i2c/scx200_*: Replace printks with pr_<level>s 2012-10-05 22:23:52 +02:00