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(parent: 3050197) | patch
mmc: sh-mmcif: fix a race, causing an Oops on SMP
authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Wed, 12 Dec 2012 14:38:14 +0000 (15:38 +0100)
committerChris Ball <cjb@laptop.org>
Mon, 28 Jan 2013 11:51:32 +0000 (06:51 -0500)
commitf20bec813edbef479bfc771abd037fc92e1ddf02
tree878dbe7a8551d0deae60bd5916d74e216c6792e9tree | snapshot
parent3050197d55b0f918ae48443b125616024065f977commit | diff
mmc: sh-mmcif: fix a race, causing an Oops on SMP

Oopses have been observed on SMP in the sh-mmcif IRQ thread, when the two
IRQ threads run simultaneously on two CPUs. Also take care to guard the
timeout work and the DMA completion callback from possible NULL-pointer
dereferences and races.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/sh_mmcif.c diff | blob | history
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