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: ed80a13bb4c4 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoC")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
---
drivers/mmc/host/meson-mx-sdio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/meson-mx-sdio.c b/drivers/mmc/host/meson-mx-sdio.c
index d4a48916bfb6..3a19a05ef55a 100644
--- a/drivers/mmc/host/meson-mx-sdio.c
+++ b/drivers/mmc/host/meson-mx-sdio.c
@@ -662,6 +662,11 @@ static int meson_mx_mmc_probe(struct platform_device *pdev)
}
irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto error_free_mmc;
+ }
+
ret = devm_request_threaded_irq(host->controller_dev, irq,
meson_mx_mmc_irq,
meson_mx_mmc_irq_thread, IRQF_ONESHOT,
--
2.26.3
