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: c8c38de9d800 ("USB host: Adding USB ehci & ohci support for spear platform")
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-spear.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index b4cd9e6c72fd..6c5af2612c46 100644
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -46,6 +46,10 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
retval = irq;
goto fail;
}
+ if (!irq) {
+ retval = -EINVAL;
+ goto fail;
+ }
/*
* Right now device-tree probed devices don't get dma_mask set.
--
2.26.3
