diff options
| author |   Barry Song <song.bao.hua@hisilicon.com> | 2020-10-28 10:52:48 +1300 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-11-09 17:25:54 +0530 |
| commit | 1ff206561920c9998058e52ea465347d4944b635 (patch) | |
| tree | bc1288f82603158f3ec1c847245cc2d838c2f759 | |
| parent | dmaengine: milbeaut-xdmac: remove redundant irqsave and irqrestore in hardIRQ (diff) | |
| download | linux-dev-1ff206561920c9998058e52ea465347d4944b635.tar.xz linux-dev-1ff206561920c9998058e52ea465347d4944b635.zip | |
dmaengine: k3dma: remove redundant irqsave and irqrestore in hardIRQ
Running in hardIRQ, disabling IRQ is redundant since hardIRQ has disabled
IRQ. This patch removes the irqsave and irqstore to save some instruction
cycles.
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Link: https://lore.kernel.org/r/20201027215252.25820-7-song.bao.hua@hisilicon.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/k3dma.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index f609a84c493c..d0b2e601e3e5 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -223,24 +223,23 @@ static irqreturn_t k3_dma_int_handler(int irq, void *dev_id) i = __ffs(stat); stat &= ~BIT(i); if (likely(tc1 & BIT(i)) || (tc2 & BIT(i))) { - unsigned long flags; p = &d->phy[i]; c = p->vchan; if (c && (tc1 & BIT(i))) { - spin_lock_irqsave(&c->vc.lock, flags); + spin_lock(&c->vc.lock); if (p->ds_run != NULL) { vchan_cookie_complete(&p->ds_run->vd); p->ds_done = p->ds_run; p->ds_run = NULL; } - spin_unlock_irqrestore(&c->vc.lock, flags); + spin_unlock(&c->vc.lock); } if (c && (tc2 & BIT(i))) { - spin_lock_irqsave(&c->vc.lock, flags); + spin_lock(&c->vc.lock); if (p->ds_run != NULL) vchan_cyclic_callback(&p->ds_run->vd); - spin_unlock_irqrestore(&c->vc.lock, flags); + spin_unlock(&c->vc.lock); } irq_chan |= BIT(i); } |