mmc: protect the tmio_mmc driver against a theoretical race

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The MMC subsystem does not guarantee, that host driver .request() and
.set_ios() callbacks are serialised. Such concurrent calls, however,
do not have to be meaningfully supported, drivers just have to make
sure to avoid any severe problems.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

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Guennadi Liakhovetski 2011-04-21 07:20:16 +00:00 • committed by Chris Ball

parent faca6648e6

commit df3ef2d3c9

2 changed files with 57 additions and 6 deletions

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1

drivers/mmc/host/tmio_mmc.h

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62

drivers/mmc/host/tmio_mmc_pio.c

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