net: ethernet: mtk_eth_soc: Fix immutable string IRQ setup

PancakeTAS · frank-w · commit ce335e34c101 · 2025-11-29T09:47:56.000+01:00
The PDMA IRQ setup code uses a string literal pointer for the ring name,
which is mutated shortly after.

Change rxring to a character array as to not write to immutable-memory.

Signed-off-by: Emilia Schotte &lt;pancake@mgnet.work&gt;
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3720,7 +3720,7 @@ static int mtk_get_irqs_fe(struct platform_device *pdev, struct mtk_eth *eth)
 
 static int mtk_get_irqs_pdma(struct platform_device *pdev, struct mtk_eth *eth)
 {
-	char *rxring = "pdma0";
+	char rxring[] = "pdma0";
 	int i;
 
 	for (i = 0; i < MTK_PDMA_IRQ_NUM; i++) {

Original file line number	Diff line number	Diff line change
`@@ -3720,7 +3720,7 @@ static int mtk_get_irqs_fe(struct platform_device pdev, struct mtk_eth eth)`
`3720`	`3720`
`3721`	`3721`	`static int mtk_get_irqs_pdma(struct platform_device pdev, struct mtk_eth eth)`
`3722`	`3722`	`{`
`3723`		`- char *rxring = "pdma0";`
	`3723`	`+ char rxring[] = "pdma0";`
`3724`	`3724`	`int i;`
`3725`	`3725`
`3726`	`3726`	`for (i = 0; i < MTK_PDMA_IRQ_NUM; i++) {`