projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 87a2f62) | patch
dmaengine: ti-dma-crossbar: Fix possible race condition with dma_inuse
authorPeter Ujfalusi <peter.ujfalusi@ti.com>
Thu, 21 Sep 2017 11:35:32 +0000 (14:35 +0300)
committerVinod Koul <vinod.koul@intel.com>
Thu, 21 Sep 2017 17:33:42 +0000 (23:03 +0530)
commit2ccb4837c938357233a0b8818e3ca3e58242c952
tree8fad3dac3958c7bbceb583cd940d34efde1d536etree | snapshot (tar.gz zip)
parent87a2f622cc6446c7d09ac655b7b9b04886f16a4ccommit | diff
dmaengine: ti-dma-crossbar: Fix possible race condition with dma_inuse

When looking for unused xbar_out lane we should also protect the set_bit()
call with the same mutex to protect against concurrent threads picking the
same ID.

Fixes: ec9bfa1e1a796 ("dmaengine: ti-dma-crossbar: dra7: Use bitops instead of idr")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
drivers/dma/ti-dma-crossbar.c diff | blob | blame | history