AcoSail/kernel_optimize_test
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dmaengine: at_xdmac: move spin_lock_bh to spin_lock in tasklet

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as you are already in a tasklet, it is unnecessary to call spin_lock_bh.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Barry Song 2018-08-17 06:03:43 -07:00 committed by Vinod Koul
parent 5b394b2ddf
commit d8570d018f
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/at_xdmac.c
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@ -1600,7 +1600,7 @@ static void at_xdmac_tasklet(unsigned long data)
if (atchan->status & AT_XDMAC_CIS_ROIS) if (atchan->status & AT_XDMAC_CIS_ROIS)
dev_err(chan2dev(&atchan->chan), "request overflow error!!!"); dev_err(chan2dev(&atchan->chan), "request overflow error!!!");
spin_lock_bh(&atchan->lock); spin_lock(&atchan->lock);
desc = list_first_entry(&atchan->xfers_list, desc = list_first_entry(&atchan->xfers_list,
struct at_xdmac_desc, struct at_xdmac_desc,
xfer_node); xfer_node);
@ -1610,7 +1610,7 @@ static void at_xdmac_tasklet(unsigned long data)
txd = &desc->tx_dma_desc; txd = &desc->tx_dma_desc;
at_xdmac_remove_xfer(atchan, desc); at_xdmac_remove_xfer(atchan, desc);
spin_unlock_bh(&atchan->lock); spin_unlock(&atchan->lock);
if (!at_xdmac_chan_is_cyclic(atchan)) { if (!at_xdmac_chan_is_cyclic(atchan)) {
dma_cookie_complete(txd); dma_cookie_complete(txd);