From: Sinan Kaya Date: Sat, 25 Mar 2017 23:04:02 +0000 (-0400) Subject: dmaengine: qcom_hidma: disable/enable IRQs on pause/resume X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c3a4528788cf09d709217f21be4b0fc38ada17d0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index 6645bdf0d151..1530a661518d 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -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; }