From 7f54fa575b33d266f91f67dbb9a0c2c0af7aca7e Mon Sep 17 00:00:00 2001 From: Christian Marangi Date: Sat, 6 May 2023 22:38:42 +0200 Subject: [PATCH] ramips: mt7620: handle request_irq fail in gsw ethernet driver Handle return from request_irq in gsw ethernet driver. Fix compilation warning: drivers/net/ethernet/ralink/gsw_mt7620.c: In function 'mtk_gsw_init': drivers/net/ethernet/ralink/gsw_mt7620.c:236:17: error: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Werror=unused-result] 236 | request_irq(gsw->irq, gsw_interrupt_mt7620, 0, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 237 | "gsw", priv); | ~~~~~~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Christian Marangi --- .../files/drivers/net/ethernet/ralink/gsw_mt7620.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c index 615544cb17..84b6e305a4 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c @@ -197,6 +197,7 @@ int mtk_gsw_init(struct fe_priv *priv) struct platform_device *pdev = of_find_device_by_node(np); struct mt7620_gsw *gsw; const __be32 *id; + int ret; u8 val; if (!pdev) @@ -233,8 +234,12 @@ int mtk_gsw_init(struct fe_priv *priv) mt7620_ephy_init(gsw); if (gsw->irq) { - request_irq(gsw->irq, gsw_interrupt_mt7620, 0, - "gsw", priv); + ret = request_irq(gsw->irq, gsw_interrupt_mt7620, 0, + "gsw", priv); + if (ret) { + dev_err(&pdev->dev, "Failed to request irq"); + return ret; + } mtk_switch_w32(gsw, ~PORT_IRQ_ST_CHG, GSW_REG_IMR); } -- 2.30.2