If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
the driver blithely passes it to usb_add_hcd() that treats IRQ0 as no IRQ
at all. Deny IRQ0 right away, returning -EINVAL from the probe() method...
Fixes: 1d4169834628 ("usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
---
Changes in version 2:
- added Alan's ACK.
drivers/usb/host/ohci-exynos.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 5f5e8a64c8e2..f28f28e42f43 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -175,6 +175,10 @@ static int exynos_ohci_probe(struct platform_device *pdev)
err = irq;
goto fail_io;
}
+ if (!irq) {
+ err = -EINVAL;
+ goto fail_io;
+ }
platform_set_drvdata(pdev, hcd);
--
2.26.3
