| Message ID | 1788456.ArSzxG6No3@wasted.cogentembedded.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
Index: linux-can/drivers/net/can/rcar_can.c =================================================================== --- linux-can.orig/drivers/net/can/rcar_can.c +++ linux-can/drivers/net/can/rcar_can.c @@ -758,8 +758,9 @@ static int rcar_can_probe(struct platfor } irq = platform_get_irq(pdev, 0); - if (!irq) { + if (irq < 0) { dev_err(&pdev->dev, "No IRQ resource\n"); + err = irq; goto fail; }
rcar_can_probe() regards 0 as a wrong IRQ #, despite platform_get_irq() that it calls returns negative error code in that case. This leads to the following being printed to the console when attempting to open the device: error requesting interrupt fffffffa because rcar_can_open() calls request_irq() with a negative IRQ #, and that function naturally fails with -EINVAL. Check for the negative error codes instead and propagate them upstream instead of just returning -ENODEV. Fixes: fd1159318e55 ("can: add Renesas R-Car CAN driver") Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> --- drivers/net/can/rcar_can.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in