mmc: tmio: always unmap DMA before waiting for interrupt
authorWolfram Sang <wsa+renesas@sang-engineering.com>
Thu, 16 Mar 2017 10:56:02 +0000 (11:56 +0100)
committerUlf Hansson <ulf.hansson@linaro.org>
Mon, 24 Apr 2017 19:41:40 +0000 (21:41 +0200)
commit5f07ef8f603ace496ca8c20eef446c5ae7a10474
tree23050122fff121588a4ca73a4bc7ca6e7259d0b0
parent48d685a2ec2bc5852cf117b558dce9e90da36601
mmc: tmio: always unmap DMA before waiting for interrupt

In the (maybe academical) case, we don't get a DATAEND interrupt after
DMA completed, we will wait endlessly for the completion to complete.
This is not bad per se, since we have a more generic completion tracking
a timeout. In that rare case, however, the DMA buffer will not get
unmapped and we have a leak. Reorder the code, so unmapping will always
take place.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/tmio_mmc_dma.c