* [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check
[not found] <717ddd7c-22cd-d82c-e43d-80254718c801@omp.ru>
@ 2021-08-08 20:37 ` Sergey Shtylyov
2021-08-08 20:50 ` Martin Blumenstingl
2021-08-09 10:08 ` Felipe Balbi
0 siblings, 2 replies; 3+ messages in thread
From: Sergey Shtylyov @ 2021-08-08 20:37 UTC (permalink / raw)
To: linux-usb, Greg Kroah-Hartman, Felipe Balbi
Cc: Neil Armstrong, Kevin Hilman, Jerome Brunet, Martin Blumenstingl,
linux-arm-kernel, linux-amlogic
The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_threaded_irq()
(which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code. Stop calling devm_request_threaded_irq() with the
invalid IRQ #s.
Fixes: f90db10779ad ("usb: dwc3: meson-g12a: Add support for IRQ based OTG switching")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
---
drivers/usb/dwc3/dwc3-meson-g12a.c | 2 ++
1 file changed, 2 insertions(+)
Index: usb/drivers/usb/dwc3/dwc3-meson-g12a.c
===================================================================
--- usb.orig/drivers/usb/dwc3/dwc3-meson-g12a.c
+++ usb/drivers/usb/dwc3/dwc3-meson-g12a.c
@@ -598,6 +598,8 @@ static int dwc3_meson_g12a_otg_init(stru
USB_R5_ID_DIG_IRQ, 0);
irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
dwc3_meson_g12a_irq_thread,
IRQF_ONESHOT, pdev->name, priv);
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check
2021-08-08 20:37 ` [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check Sergey Shtylyov
@ 2021-08-08 20:50 ` Martin Blumenstingl
2021-08-09 10:08 ` Felipe Balbi
1 sibling, 0 replies; 3+ messages in thread
From: Martin Blumenstingl @ 2021-08-08 20:50 UTC (permalink / raw)
To: Sergey Shtylyov
Cc: linux-usb, Greg Kroah-Hartman, Felipe Balbi, Neil Armstrong,
Kevin Hilman, Jerome Brunet, linux-arm-kernel, linux-amlogic
Hi Sergey,
On Sun, Aug 8, 2021 at 10:37 PM Sergey Shtylyov <s.shtylyov@omp.ru> wrote:
>
> The driver neglects to check the result of platform_get_irq()'s call and
> blithely passes the negative error codes to devm_request_threaded_irq()
> (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
> an original error code. Stop calling devm_request_threaded_irq() with the
> invalid IRQ #s.
>
> Fixes: f90db10779ad ("usb: dwc3: meson-g12a: Add support for IRQ based OTG switching")
> Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Thanks for spotting and fixing this issue!
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check
2021-08-08 20:37 ` [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check Sergey Shtylyov
2021-08-08 20:50 ` Martin Blumenstingl
@ 2021-08-09 10:08 ` Felipe Balbi
1 sibling, 0 replies; 3+ messages in thread
From: Felipe Balbi @ 2021-08-09 10:08 UTC (permalink / raw)
To: Sergey Shtylyov
Cc: linux-usb, Greg Kroah-Hartman, Neil Armstrong, Kevin Hilman,
Jerome Brunet, Martin Blumenstingl, linux-arm-kernel,
linux-amlogic
Sergey Shtylyov <s.shtylyov@omp.ru> writes:
> The driver neglects to check the result of platform_get_irq()'s call and
> blithely passes the negative error codes to devm_request_threaded_irq()
> (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
> an original error code. Stop calling devm_request_threaded_irq() with the
> invalid IRQ #s.
>
> Fixes: f90db10779ad ("usb: dwc3: meson-g12a: Add support for IRQ based OTG switching")
> Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Felipe Balbi <balbi@kernel.org>
--
balbi
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-08-08 20:37 ` [PATCH 1/9] usb: dwc3: meson-g12a: add IRQ check Sergey Shtylyov
2021-08-08 20:50 ` Martin Blumenstingl
2021-08-09 10:08 ` Felipe Balbi
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