[PATCH v2 08/22] usb: host: ohci-at91: deny IRQ0
From: Sergey Shtylyov <hidden>
Date: 2021-10-26 17:42:21
Also in:
linux-arm-kernel
Subsystem:
the rest, usb ohci driver, usb subsystem · Maintainers:
Linus Torvalds, Alan Stern, Greg Kroah-Hartman
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: fb5f1834c322 ("usb: ohci-at91: fix irq and iomem resource retrieval")
Signed-off-by: Sergey Shtylyov <redacted>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
Changes in version 2:
- added Alan's ACK.
drivers/usb/host/ohci-at91.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index a24aea3d2759..6a7276a730d1 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c@@ -181,6 +181,8 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, dev_dbg(dev, "hcd probe: missing irq resource\n"); return irq; } + if (!irq) + return -EINVAL; hcd = usb_create_hcd(driver, dev, "at91"); if (!hcd)
--
2.26.3