diff options
| author | Kuninori Morimoto <[email protected]> | 2015-05-21 03:48:38 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2015-05-22 14:14:21 +0100 |
| commit | d23c9a0a5c237210bccb82a2e9dc0d26e75920ee (patch) | |
| tree | 03d2326d7ab8790b5ac681d8947a46c9885f0cfe /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | b787f68c36d49bb1d9236f403813641efa74a031 (diff) | |
dmaengine: rcar-dmac: fixup spinlock in rcar-dmac
Current rcar-dmac driver is using spin_lock_irq() / spin_unlock_irq()
in some functions. But, some other driver might call DMAEngine API
during interrupt disabled. In such case, rcar-dmac side spin_unlock_irq()
forcefully allows all interrupts. Therefore, other driver receives
unexpected interruption, and its exclusive access control will be broken.
This patch replaces spin_lock_irq() to spin_lock_irqsave(),
and spin_unlock_irq() to spin_unlock_irqrestore().
Reported-by: Cao Minh Hiep <[email protected]>
Signed-off-by: Kuninori Morimoto <[email protected]>
Tested-by: Keita Kobayashi <[email protected]>
Acked-by: Vinod Koul <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions