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
..
at91_mci.c
at91_mci.h
atmel-mci-regs.h
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
bfin_sdh.c	mmc: bfin_sdh: fix dma_desc_array build error	2012-09-04 13:58:04 -04:00
cb710-mmc.c
cb710-mmc.h
davinci_mmc.c
dw_mmc-pci.c
dw_mmc-pltfm.c
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
jz4740_mmc.c
Kconfig
Makefile
mmc_spi.c
mmci.c
mmci.h
msm_sdcc.c
msm_sdcc.h
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
mxs-mmc.c	mmc: mxs-mmc: fix deadlock caused by recursion loop	2012-09-04 13:58:06 -04:00
of_mmc_spi.c
omap_hsmmc.c	Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm	2012-08-01 16:41:07 -07:00
omap.c	mmc: omap: fix broken PIO mode	2012-09-04 13:58:11 -04:00
pxamci.c
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
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
sdhci-of-hlwd.c
sdhci-pci-data.c
sdhci-pci.c	mmc: sdhci-pci: CaFe has broken card detection	2012-07-22 15:25:46 -04:00
sdhci-pltfm.c
sdhci-pltfm.h
sdhci-pxav2.c
sdhci-pxav3.c
sdhci-s3c.c
sdhci-spear.c
sdhci-tegra.c
sdhci.c	mmc: sd: Fix sd current limit setting	2012-07-22 15:25:52 -04:00
sdhci.h
sdricoh_cs.c
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
tmio_mmc_dma.c
tmio_mmc_pio.c
tmio_mmc.c
tmio_mmc.h
ushc.c
via-sdmmc.c
vub300.c
wbsd.c
wbsd.h