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linux-next/drivers/mmc
Per Forlin 053bf34f5a mmc: omap_hsmmc: DMA unmap only once in case of MMC error
Reported by Russell King:
mmcblk0: error -84 transferring data, sector 149201, nr 64,
cmd response 0x900, card status 0xb00
mmcblk0: retrying using single block read

WARNING: at lib/dma-debug.c:811 check_unmap
omap_hsmmc omap_hsmmc.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000080933000] [size=20480 bytes]

In case of an error dma_unmap() is issued in omap_hsmmc_dma_cleanup()
and then again in omap_hsmmc_post_req(). Resolve this by clearing the
host_cookie to indicate there is no DMA mapped memory to unmap.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Tested-by: Balaji T K <balajitk@ti.com>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-12-07 23:10:56 -05:00
..
card mmc: core: add workaround for controllers with broken multiblock reads 2011-10-27 09:10:57 -04:00
core mmc: Fix implicit use of stat.h header in associated files 2011-10-31 19:32:07 -04:00
host mmc: omap_hsmmc: DMA unmap only once in case of MMC error 2011-12-07 23:10:56 -05:00
Kconfig mmc: explicitly mention SDIO support in Kconfig 2008-10-12 11:04:36 +02:00
Makefile mmc: Makefile: Fix EXTRA_CFLAGS assignment 2010-10-23 21:11:15 +08:00