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dmaengine: at_xdmac: Fix missing unlock in at_xdmac_tasklet()

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Add the missing unlock before return from at_xdmac_tasklet().

Fixes: e77e561925 ("dmaengine: at_xdmac: Fix race over irq_status")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20220107024047.1051915-1-yangyingliang@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Yang Yingliang 2022-01-07 10:40:47 +08:00 • committed by Vinod Koul
parent 3c62fd3406
commit aa7accb7f9
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/at_xdmac.c
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@ -1681,8 +1681,10 @@ static void at_xdmac_tasklet(struct tasklet_struct *t)
__func__, atchan->irq_status);
if (!(atchan->irq_status & AT_XDMAC_CIS_LIS) &&
!(atchan->irq_status & error_mask))
!(atchan->irq_status & error_mask)) {
spin_unlock_irq(&atchan->lock);
return;
}
if (atchan->irq_status & error_mask)
at_xdmac_handle_error(atchan);