From: Javier Martinez Canillas <javier@osg.samsung.com>
To: Krzysztof Kozlowski <k.kozlowski@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com
Cc: ldewangan@nvidia.com
Subject: [rtc-linux] Re: [PATCH] rtc: max77686: Properly handle regmap_irq_get_virq() error code
Date: Wed, 3 Feb 2016 23:47:16 -0300 [thread overview]
Message-ID: <56B2BBB4.8090607@osg.samsung.com> (raw)
In-Reply-To: <1454545595-31725-1-git-send-email-k.kozlowski@samsung.com>
Hello Krzysztof,
On 02/03/2016 09:26 PM, Krzysztof Kozlowski wrote:
> The regmap_irq_get_virq() can return 0 or -EINVAL in error conditions
> but driver checked only for value of 0.
>
> This could lead to a cast of -EINVAL to an unsigned int used as a
> interrupt number for devm_request_threaded_irq(). Although this is not
> yet fatal (devm_request_threaded_irq() will just fail with -EINVAL) but
> might be a misleading when diagnosing errors.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> Fixes: 6f1c1e71d933 ("mfd: max77686: Convert to use regmap_irq")
>
> ---
>
Good catch.
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
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WARNING: multiple messages have this Message-ID (diff)
From: Javier Martinez Canillas <javier@osg.samsung.com>
To: Krzysztof Kozlowski <k.kozlowski@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com
Cc: ldewangan@nvidia.com
Subject: Re: [PATCH] rtc: max77686: Properly handle regmap_irq_get_virq() error code
Date: Wed, 3 Feb 2016 23:47:16 -0300 [thread overview]
Message-ID: <56B2BBB4.8090607@osg.samsung.com> (raw)
In-Reply-To: <1454545595-31725-1-git-send-email-k.kozlowski@samsung.com>
Hello Krzysztof,
On 02/03/2016 09:26 PM, Krzysztof Kozlowski wrote:
> The regmap_irq_get_virq() can return 0 or -EINVAL in error conditions
> but driver checked only for value of 0.
>
> This could lead to a cast of -EINVAL to an unsigned int used as a
> interrupt number for devm_request_threaded_irq(). Although this is not
> yet fatal (devm_request_threaded_irq() will just fail with -EINVAL) but
> might be a misleading when diagnosing errors.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> Fixes: 6f1c1e71d933 ("mfd: max77686: Convert to use regmap_irq")
>
> ---
>
Good catch.
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
next prev parent reply other threads:[~2016-02-04 2:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-04 0:26 [rtc-linux] [PATCH] rtc: max77686: Properly handle regmap_irq_get_virq() error code Krzysztof Kozlowski
2016-02-04 0:26 ` Krzysztof Kozlowski
2016-02-04 2:47 ` Javier Martinez Canillas [this message]
2016-02-04 2:47 ` Javier Martinez Canillas
2016-02-04 22:49 ` [rtc-linux] " Alexandre Belloni
2016-02-04 22:49 ` Alexandre Belloni
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