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(parent: 32d317c) | patch
mmc: dw_mmc: Fix switch from DMA to PIO
authorSeungwon Jeon <tgih.jun@samsung.com>
Tue, 10 Apr 2012 00:53:32 +0000 (09:53 +0900)
committerChris Ball <cjb@laptop.org>
Sat, 21 Apr 2012 00:30:37 +0000 (20:30 -0400)
commita99aa9b9b4f4f3e496d17a1b4e0ff63fb0c9f31d
treed3d7bb12cbabce20789671d07055e305b8138c1atree | snapshot
parent32d317c60e56c2a34463b51fc0336cc96b3e1735commit | diff
mmc: dw_mmc: Fix switch from DMA to PIO

When dw_mci_pre_dma_transfer returns failure in some reasons,
dw_mci_submit_data will prepare to switch the PIO mode from DMA.
After switching to PIO mode, DMA(IDMAC in particular) is still
enabled. This makes the corruption in handling interrupt and
the driver lock-up.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/dw_mmc.c diff | blob | history
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