From: Miaoqian Lin <linmq006@xxxxxxxxx>
commit e937440f7fc444a3e3f1fb75ea65292d6f433a44 upstream.
This check misses checking for platform_get_irq()'s call and may passes
the negative error codes to devm_request_irq(), which takes unsigned IRQ #,
causing it to fail with -EINVAL, overriding an original error code.
Stop calling devm_request_irq() with invalid IRQ #s.
Fixes: 454fa271bc4e ("spi: Add Meson SPICC driver")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220126110447.24549-1-linmq006@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-meson-spicc.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/spi/spi-meson-spicc.c
+++ b/drivers/spi/spi-meson-spicc.c
@@ -529,6 +529,11 @@ static int meson_spicc_probe(struct plat
writel_relaxed(0, spicc->base + SPICC_INTREG);
irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto out_master;
+ }
+
ret = devm_request_irq(&pdev->dev, irq, meson_spicc_irq,
0, NULL, spicc);
if (ret) {
