mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

dmaengine: qcom_hidma: disable/enable IRQs on pause/resume 

Once the channels are stopped, disable interrupts to make sure no new
HW interaction can happen.

Similarly, re-enable the interrupts only if we know that channel is
operational again.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Sinan Kaya 2017-03-25 19:04:02 -04:00 committed by Vinod Koul
parent c1ae3cfa0e
commit c3a4528788
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/dma/qcom/hidma_ll.c
View File

@ -499,6 +499,9 @@ int hidma_ll_enable(struct hidma_lldev *lldev)
lldev->trch_state = HIDMA_CH_ENABLED;
lldev->evch_state = HIDMA_CH_ENABLED;
/* enable irqs */
writel(ENABLE_IRQS, lldev->evca + HIDMA_EVCA_IRQ_EN_REG);
return 0;
}
@ -596,6 +599,9 @@ int hidma_ll_disable(struct hidma_lldev *lldev)
lldev->trch_state = HIDMA_CH_SUSPENDED;
lldev->evch_state = HIDMA_CH_SUSPENDED;
/* disable interrupts */
writel(0, lldev->evca + HIDMA_EVCA_IRQ_EN_REG);
return 0;
}