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dmaengine: bcm-sba-raid: serialize dma_cookie_complete() using reqs_lock

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As-per documentation in driver/dma/dmaengine.h, the
dma_cookie_complete() API should be called with lock
held.

This patch ensures that Broadcom SBA RAID driver calls
the dma_cookie_complete() API with reqs_lock held.

Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Ray Jui <[email protected]>
Reviewed-by: Scott Branden <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
This commit is contained in:
Anup Patel 2017-10-03 10:52:57 +05:30 • committed by Vinod Koul
commit 5d74aa7f64
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/bcm-sba-raid.c
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@ -442,7 +442,9 @@ static void sba_process_received_request(struct sba_device *sba,
WARN_ON(tx->cookie < 0);
if (tx->cookie > 0) {
spin_lock_irqsave(&sba->reqs_lock, flags);
dma_cookie_complete(tx);
spin_unlock_irqrestore(&sba->reqs_lock, flags);
dmaengine_desc_get_callback_invoke(tx, NULL);
dma_descriptor_unmap(tx);
tx->callback = NULL;