5.4-stable review patch. If anyone has any objections, please let me know.
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From: Rohan G Thomas rohan.g.thomas@altera.com
[ Upstream commit 4f23382841e67174211271a454811dd17c0ef3c5 ]
Enabling RX FIFO Overflow interrupts is counterproductive and causes an interrupt storm when RX FIFO overflows. Disabling this interrupt has no side effect and eliminates interrupt storms when the RX FIFO overflows.
Commit 8a7cb245cf28 ("net: stmmac: Do not enable RX FIFO overflow interrupts") disables RX FIFO overflow interrupts for DWMAC4 IP and removes the corresponding handling of this interrupt. This patch is doing the same thing for XGMAC IP.
Fixes: 2142754f8b9c ("net: stmmac: Add MAC related callbacks for XGMAC2") Signed-off-by: Rohan G Thomas rohan.g.thomas@altera.com Reviewed-by: Matthew Gerlach matthew.gerlach@altera.com Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://patch.msgid.link/20250825-xgmac-minor-fixes-v3-1-c225fe4444c0@altera... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c index 07ef0ac725b3e..93d1b78c9d4ec 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c @@ -206,10 +206,6 @@ static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode, }
writel(value, ioaddr + XGMAC_MTL_RXQ_OPMODE(channel)); - - /* Enable MTL RX overflow */ - value = readl(ioaddr + XGMAC_MTL_QINTEN(channel)); - writel(value | XGMAC_RXOIE, ioaddr + XGMAC_MTL_QINTEN(channel)); }
static void dwxgmac2_dma_tx_mode(void __iomem *ioaddr, int mode,