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From: Sergey Shtylyov <s.shtylyov@omprussia.ru>
To: <linux-i2c@vger.kernel.org>
Subject: Re: [PATCH v2 6/6] i2c: sh7760: add IRQ check
Date: Thu, 15 Apr 2021 18:52:49 +0300
Message-ID: <58fe3ab6-7b9d-98a4-39a0-98344097f805@omprussia.ru> (raw)
In-Reply-To: <4cbffdae-f4c3-04b2-ca9b-387e7721386d@omprussia.ru>

On 4/10/21 11:25 PM, Sergey Shtylyov wrote:

> The driver neglects to check the result of platform_get_irq()'s call and
> blithely passes the negative error codes to devm_request_irq() (which
> takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
> an original error code.  Stop calling devm_request_irq() with invalid
> IRQ #s.
> 
> Fixes: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver")
> Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
> 
> ---
> Changes in version 2:
> - new patch.
> 
>  drivers/i2c/busses/i2c-sh7760.c |    5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> Index: linux/drivers/i2c/busses/i2c-sh7760.c
> ===================================================================
> --- linux.orig/drivers/i2c/busses/i2c-sh7760.c
> +++ linux/drivers/i2c/busses/i2c-sh7760.c
> @@ -471,7 +471,10 @@ static int sh7760_i2c_probe(struct platf
>  		goto out2;
>  	}
>  
> -	id->irq = platform_get_irq(pdev, 0);
> +	ret = platform_get_irq(pdev, 0);
> +	if (ret < 0)
> +		return ret;

   Should have been *goto* out3. Sorry for my overlook! :-/

[...]

MBR, Sergey

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-10 20:11 [PATCH v2 0/6] Stop calling devm_request_irq() with invalid IRQs in the I2C bus drivers Sergey Shtylyov
2021-04-10 20:14 ` [PATCH v2 1/6] i2c: cadence: add IRQ check Sergey Shtylyov
2021-04-10 20:16 ` [PATCH v2 2/6] i2c: emev2: " Sergey Shtylyov
2021-04-10 20:18 ` [PATCH v2 3/6] i2c: jz4780: " Sergey Shtylyov
2021-04-10 20:20 ` [PATCH v2 4/6] i2c: mlxbf: " Sergey Shtylyov
2021-04-10 20:23 ` [PATCH v2 5/6] i2c: rcar: " Sergey Shtylyov
2021-04-10 20:25 ` [PATCH v2 6/6] i2c: sh7760: " Sergey Shtylyov
2021-04-15 15:52   ` Sergey Shtylyov [this message]
2021-04-15 19:57     ` Wolfram Sang
2021-04-10 20:31 ` [PATCH v2 0/6] Stop calling devm_request_irq() with invalid IRQs in the I2C bus drivers Sergey Shtylyov
2021-04-10 20:57 ` Sergey Shtylyov
2021-04-14  8:22 ` Wolfram Sang
2021-04-17 19:05 ` [PATCH] i2c: sh7760: fix IRQ error path Sergey Shtylyov
2021-04-17 20:01   ` Wolfram Sang

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