[PATCH 07/22] usb: host: ehci-st: deny IRQ0
From: Sergey Shtylyov <hidden>
Date: 2021-10-18 18:41:32
Also in:
linux-usb
Subsystem:
arm/sti architecture, the rest, usb ehci driver, usb subsystem · Maintainers:
Patrice Chotard, 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: e47c5a0906f9 ("usb: host: ehci-st: Add EHCI support for ST STB devices")
Signed-off-by: Sergey Shtylyov <redacted>
---
drivers/usb/host/ehci-st.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
index f74433aac948..5f53c313f943 100644
--- a/drivers/usb/host/ehci-st.c
+++ b/drivers/usb/host/ehci-st.c@@ -160,6 +160,8 @@ static int st_ehci_platform_probe(struct platform_device *dev) irq = platform_get_irq(dev, 0); if (irq < 0) return irq; + if (!irq) + return -EINVAL; res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0); if (!res_mem) { dev_err(&dev->dev, "no memory resource provided");
--
2.26.3
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