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authorJose Abreu2019-01-09 10:05:57 +0100
committerDavid S. Miller2019-01-11 15:35:06 -0800
commitfcc509eb10ff4794641e6ad3082118287a750d0a (patch)
treee749f7266eb2a7b59fc977c9f70821b9454a2ed6 /drivers
parent6dea7e1881fd86b80da64e476ac398008daed857 (diff)
net: stmmac: dwxgmac2: Only clear interrupts that are active
In DMA interrupt handler we were clearing all interrupts status, even the ones that were not active. Fix this and only clear the active interrupts. Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 6c5092e7771c..c5e25580a43f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -263,6 +263,7 @@ static int dwxgmac2_dma_interrupt(void __iomem *ioaddr,
struct stmmac_extra_stats *x, u32 chan)
{
u32 intr_status = readl(ioaddr + XGMAC_DMA_CH_STATUS(chan));
+ u32 intr_en = readl(ioaddr + XGMAC_DMA_CH_INT_EN(chan));
int ret = 0;
/* ABNORMAL interrupts */
@@ -282,8 +283,7 @@ static int dwxgmac2_dma_interrupt(void __iomem *ioaddr,
x->normal_irq_n++;
if (likely(intr_status & XGMAC_RI)) {
- u32 value = readl(ioaddr + XGMAC_DMA_CH_INT_EN(chan));
- if (likely(value & XGMAC_RIE)) {
+ if (likely(intr_en & XGMAC_RIE)) {
x->rx_normal_irq_n++;
ret |= handle_rx;
}
@@ -295,7 +295,7 @@ static int dwxgmac2_dma_interrupt(void __iomem *ioaddr,
}
/* Clear interrupts */
- writel(~0x0, ioaddr + XGMAC_DMA_CH_STATUS(chan));
+ writel(intr_en & intr_status, ioaddr + XGMAC_DMA_CH_STATUS(chan));
return ret;
}