[PATCH v2 14/22] usb: host: ohci-pxa27x: deny IRQ0
From: Sergey Shtylyov <hidden>
Date: 2021-10-26 17:40:07
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: 84bab7393b0d ("[ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource")
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-pxa27x.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 54aa5c77e549..336437277fd0 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c@@ -443,6 +443,8 @@ static int ohci_hcd_pxa27x_probe(struct platform_device *pdev) pr_err("no resource of IORESOURCE_IRQ"); return irq; } + if (!irq) + return -EINVAL; usb_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(usb_clk))
--
2.26.3