From 37580559f314bfba0c8bdae002bc5c10088ac457 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 17 Nov 2015 13:37:07 +0200 Subject: [PATCH] dmaengine: idma64: drop IRQ enable / disable in handler There is no need to disable interrupts in the IRQ handler. The driver guarantess that at one time only one descriptor is active, besides the fact that each call to the same channel will be serialized in idma64_chan_irq() handler anyway. Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul --- drivers/dma/idma64.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c index 7d56b47e4fcf..6bba0907c263 100644 --- a/drivers/dma/idma64.c +++ b/drivers/dma/idma64.c @@ -178,20 +178,12 @@ static irqreturn_t idma64_irq(int irq, void *dev) if (!status) return IRQ_NONE; - /* Disable interrupts */ - channel_clear_bit(idma64, MASK(XFER), idma64->all_chan_mask); - channel_clear_bit(idma64, MASK(ERROR), idma64->all_chan_mask); - status_xfer = dma_readl(idma64, RAW(XFER)); status_err = dma_readl(idma64, RAW(ERROR)); for (i = 0; i < idma64->dma.chancnt; i++) idma64_chan_irq(idma64, i, status_err, status_xfer); - /* Re-enable interrupts */ - channel_set_bit(idma64, MASK(XFER), idma64->all_chan_mask); - channel_set_bit(idma64, MASK(ERROR), idma64->all_chan_mask); - return IRQ_HANDLED; } -- 2.30.2