From: Sergey Shtylyov <s.shtylyov@omp.ru>
To: <linux-usb@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Felipe Balbi <balbi@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-samsung-soc@vger.kernel.org>
Subject: [PATCH v2 4/9] usb: gadget: udc: s3c2410: add IRQ check
Date: Mon, 9 Aug 2021 23:35:11 +0300 [thread overview]
Message-ID: <bd69b22c-b484-5a1f-c798-78d4b78405f2@omp.ru> (raw)
In-Reply-To: <47bacc02-4e34-3208-779c-7072a6261782@omp.ru>
The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original
error code. Stop calling request_irq() with the invalid IRQ #s.
Fixes: 188db4435ac6 ("usb: gadget: s3c: use platform resources")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
---
drivers/usb/gadget/udc/s3c2410_udc.c | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
Index: usb/drivers/usb/gadget/udc/s3c2410_udc.c
===================================================================
--- usb.orig/drivers/usb/gadget/udc/s3c2410_udc.c
+++ usb/drivers/usb/gadget/udc/s3c2410_udc.c
@@ -1784,6 +1784,10 @@ static int s3c2410_udc_probe(struct plat
s3c2410_udc_reinit(udc);
irq_usbd = platform_get_irq(pdev, 0);
+ if (irq_usbd < 0) {
+ retval = irq_usbd;
+ goto err_udc_clk;
+ }
/* irq setup after old hardware state is cleaned up */
retval = request_irq(irq_usbd, s3c2410_udc_irq,
next parent reply other threads:[~2021-08-09 20:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <47bacc02-4e34-3208-779c-7072a6261782@omp.ru>
2021-08-09 20:35 ` Sergey Shtylyov [this message]
2021-08-10 6:53 ` [PATCH v2 4/9] usb: gadget: udc: s3c2410: add IRQ check Krzysztof Kozlowski
2021-08-12 5:40 ` Felipe Balbi
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