The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_threaded_irq()
(which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code. Stop calling devm_request_threaded_irq() with the
invalid IRQ #s.
Fixes: e4bf1b0970ef ("mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
---
drivers/mmc/host/meson-mx-sdhc-mmc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/meson-mx-sdhc-mmc.c b/drivers/mmc/host/meson-mx-sdhc-mmc.c
index 7cd9c0ec2fcf..b6a1f25903a2 100644
--- a/drivers/mmc/host/meson-mx-sdhc-mmc.c
+++ b/drivers/mmc/host/meson-mx-sdhc-mmc.c
@@ -838,6 +838,11 @@ static int meson_mx_sdhc_probe(struct platform_device *pdev)
goto err_disable_pclk;
irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto err_disable_pclk;
+ }
+
ret = devm_request_threaded_irq(dev, irq, meson_mx_sdhc_irq,
meson_mx_sdhc_irq_thread, IRQF_ONESHOT,
NULL, host);
--
2.26.3
