[PATCH v2 05/22] usb: host: ehci-platform: deny IRQ0
From: Sergey Shtylyov <hidden>
Date: 2021-10-26 17:42:04
Also in:
linux-usb
Subsystem:
the rest, usb ehci 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: 7a7a4a592f42 ("USB: EHCI: Add a generic platform device driver")
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/ehci-platform.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index c70f2d0b4aaf..1b20af65d799 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c@@ -265,6 +265,8 @@ static int ehci_platform_probe(struct platform_device *dev) irq = platform_get_irq(dev, 0); if (irq < 0) return irq; + if (!irq) + return -EINVAL; hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev, dev_name(&dev->dev));
--
2.26.3
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