Paul Walmsley 75b53aee2f mmc: omap: fix broken PIO mode ... After commit 26b88520b8 ("mmc: omap_hsmmc: remove private DMA API implementation"), the Nokia N800 here stopped booting: [ 2.086181] Waiting for root device /dev/mmcblk0p1... [ 2.324066] Unhandled fault: imprecise external abort (0x406) at 0x00000000 [ 2.331451] Internal error: : 406 [#1] ARM [ 2.335784] Modules linked in: [ 2.339050] CPU: 0 Not tainted (3.6.0-rc3 #60) [ 2.344146] PC is at default_idle+0x28/0x30 [ 2.348602] LR is at trace_hardirqs_on_caller+0x15c/0x1b0 ... This turned out to be due to memory corruption caused by long-broken PIO code in drivers/mmc/host/omap.c. (Previously, this driver had been using DMA; but the above commit caused the MMC driver to fall back to PIO mode with an unmodified Kconfig.) The PIO code, added with the rest of the driver in commit 730c9b7e66 ("[MMC] Add OMAP MMC host driver"), confused bytes with 16-bit words. This bug caused memory located after the PIO transfer buffer to be corrupted with transfers larger than 32 bytes. The driver also did not increment the buffer pointer after the transfer occurred. This bug resulted in data corruption during any transfer larger than 64 bytes. Signed-off-by: Paul Walmsley <paul@pwsan.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Chris Ball <cjb@laptop.org>		2012-09-04 13:58:11 -04:00
..
Kconfig	mmc: at91-mci: this driver is now deprecated	2012-05-17 14:33:48 -04:00
Makefile	mmc: remove imxmmc driver	2012-04-22 11:17:25 -04:00
at91_mci.c	ARM: at91: code removal of CAP9 SoC	2012-02-03 13:33:05 +01:00
at91_mci.h	mmc: at91_mci: move register header from include/ to drivers/	2011-07-21 10:35:08 -04:00
atmel-mci-regs.h	mmc: atmel-mci: fix burst/chunk size modification	2012-06-06 08:52:12 -04:00
atmel-mci.c	mmc: atmel-mci: not busy flag has also to be used for read operations	2012-09-04 13:58:07 -04:00
au1xmmc.c	MIPS: Alchemy: Au1300 SoC support	2011-12-07 22:02:05 +00:00
bfin_sdh.c	mmc: bfin_sdh: fix dma_desc_array build error	2012-09-04 13:58:04 -04:00
cb710-mmc.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
cb710-mmc.h	…
davinci_mmc.c	mmc: davinci_mmc: set MODULE_ALIAS to allow autoloading	2012-04-22 11:16:58 -04:00
dw_mmc-pci.c	mmc: Support of PCI mode in the dw_mmc driver	2012-03-25 19:33:44 -04:00
dw_mmc-pltfm.c	mmc: Support of PCI mode in the dw_mmc driver	2012-03-25 19:33:44 -04:00
dw_mmc.c	mmc: dw_mmc: Disable low power mode if SDIO interrupts are used	2012-09-04 13:58:10 -04:00
dw_mmc.h	mmc: Support of PCI mode in the dw_mmc driver	2012-03-25 19:33:44 -04:00
jz4740_mmc.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
mmc_spi.c	mmc: Remove redundant spi driver bus initialization	2012-01-11 23:58:42 -05:00
mmci.c	ARM: 7427/1: mmc: mmci: Defer probe() in case of yet uninitialized GPIOs	2012-06-17 22:24:36 +01:00
mmci.h	ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register	2012-02-02 17:02:15 +00:00
msm_sdcc.c	mmc: remove the second argument of k[un]map_atomic()	2012-01-11 23:58:42 -05:00
msm_sdcc.h	mmc: msm_sdcc: Use MCI_INT_MASK0 for PIO interrupts	2011-10-26 15:43:37 -04:00
mvsdio.c	ARM: Orion: fix driver probe error handling with respect to clk	2012-07-25 17:06:21 +02:00
mvsdio.h	…
mxcmmc.c	mmc mxcmmc: do not depend on grouped clocks	2012-04-25 17:03:38 +02:00
mxs-mmc.c	mmc: mxs-mmc: fix deadlock caused by recursion loop	2012-09-04 13:58:06 -04:00
of_mmc_spi.c	mmc: of_mmc_spi: fix little endian support	2012-02-13 20:38:58 -05:00
omap.c	mmc: omap: fix broken PIO mode	2012-09-04 13:58:11 -04:00
omap_hsmmc.c	Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm	2012-08-01 16:41:07 -07:00
pxamci.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
pxamci.h	…
s3cmci.c	mmc: s3cmci: Convert s3cmci driver to gpiolib API	2012-07-22 15:25:44 -04:00
s3cmci.h	…
sdhci-cns3xxx.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
sdhci-dove.c	mmc: sdhci-dove: Prepare for common clock framework	2012-07-22 16:42:48 -04:00
sdhci-esdhc-imx.c	mmc: esdhc: Fix DMA_MASK to not break mx25 DMA access	2012-07-22 16:42:30 -04:00
sdhci-esdhc.h	mmc: sdhci-esdhc: break out early if clock is 0	2012-09-04 13:58:06 -04:00
sdhci-of-esdhc.c	mmc: esdhc: Workaround for data crc error on p1010rdb	2012-03-25 19:33:45 -04:00
sdhci-of-hlwd.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
sdhci-pci-data.c	mmc: sdhci-pci: add platform data	2012-01-11 23:58:47 -05:00
sdhci-pci.c	mmc: sdhci-pci: CaFe has broken card detection	2012-07-22 15:25:46 -04:00
sdhci-pltfm.c	mmc: dt: Consolidate DT bindings	2012-05-15 13:29:42 +02:00
sdhci-pltfm.h	mmc: sdhci: remove "state" argument from sdhci_suspend_host	2011-12-19 15:50:11 -08:00
sdhci-pxav2.c	mmc: sdhci-pxa: Add device tree support	2012-07-21 00:01:47 -04:00
sdhci-pxav3.c	mmc: sdhci-pxa: Add device tree support	2012-07-21 00:01:47 -04:00
sdhci-s3c.c	mmc: sdhci-s3c: pass IRQF ONESHOT to request threaded irq	2012-06-06 09:53:22 -04:00
sdhci-spear.c	Viresh has moved	2012-06-20 14:39:36 -07:00
sdhci-tegra.c	Merge branch 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/clk	2012-07-06 22:21:23 +02:00
sdhci.c	mmc: sd: Fix sd current limit setting	2012-07-22 15:25:52 -04:00
sdhci.h	mmc: sdhci: if MAX_CURRENT is 0, try getting current from regulator	2012-07-21 00:02:22 -04:00
sdricoh_cs.c	mmc: Add module.h to drivers/mmc users assuming implicit presence.	2011-10-26 16:32:19 -04:00
sh_mmcif.c	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-07-24 17:12:54 -07:00
sh_mobile_sdhi.c	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-07-24 17:12:54 -07:00
tifm_sd.c	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
tmio_mmc.c	mmc: convert drivers/mmc/host/* to use module_platform_driver()	2012-01-11 23:58:42 -05:00
tmio_mmc.h	mmc: tmio_mmc: remove unused sdio_irq_enabled flag	2012-03-27 12:20:17 -04:00
tmio_mmc_dma.c	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-03-29 15:34:57 -07:00
tmio_mmc_pio.c	mmc: tmio: use generic GPIO CD and WP handlers	2012-07-21 00:02:20 -04:00
ushc.c	USB: convert some miscellanies drivers to use module_usb_driver()	2011-11-18 09:52:10 -08:00
via-sdmmc.c	mmc: replace printk with appropriate display macro	2011-10-26 16:32:22 -04:00
vub300.c	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
wbsd.c	mmc: replace printk with appropriate display macro	2011-10-26 16:32:22 -04:00
wbsd.h	…