[PATCH 03/14] DMAENGINE: ste_dma40: No need reading, masking and setting a set register
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From: Linus Walleij on 9 Aug 2010 08:10 From: Jonas Aaberg <jonas.aberg(a)stericsson.com> Removes an unnecessary register read and a few lines of code. Signed-off-by: Jonas Aaberg <jonas.aberg(a)stericsson.com> Signed-off-by: Linus Walleij <linus.walleij(a)stericsson.com> --- drivers/dma/ste_dma40.c | 5 +---- 1 files changed, 1 insertions(+), 4 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 8aff865..538c35d 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -915,7 +915,6 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data) int i; u32 regs[ARRAY_SIZE(il)]; - u32 tmp; u32 idx; u32 row; long chan = -1; @@ -942,9 +941,7 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data) idx = chan & (BITS_PER_LONG - 1); /* ACK interrupt */ - tmp = readl(base->virtbase + il[row].clr); - tmp |= 1 << idx; - writel(tmp, base->virtbase + il[row].clr); + writel(1 << idx, base->virtbase + il[row].clr); if (il[row].offset == D40_PHY_CHAN) d40c = base->lookup_phy_chans[idx]; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |