From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Chengfeng Ye <dg573847474@gmail.com>,
alim.akhtar@samsung.com, wim@linux-watchdog.org,
linux@roeck-us.net
Cc: linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org,
linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] watchdog: s3c2410: Fix potential deadlock on &wdt->lock
Date: Wed, 5 Jul 2023 11:37:59 +0200 [thread overview]
Message-ID: <9b7e8438-411b-457b-1e5b-c4b37981ef67@linaro.org> (raw)
In-Reply-To: <20230705090951.63762-1-dg573847474@gmail.com>
On 05/07/2023 11:09, Chengfeng Ye wrote:
> As &wdt->lock is acquired by hard irq s3c2410wdt_irq(),
> other acquisition of the same lock under process context should
> disable irq, otherwise deadlock could happen if the
> irq preempt the execution while the lock is held in process context
> on the same CPU.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
next prev parent reply other threads:[~2023-07-05 9:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-05 9:09 Chengfeng Ye
2023-07-05 9:37 ` Krzysztof Kozlowski [this message]
2023-07-05 12:51 ` Guenter Roeck
2023-07-05 14:40 ` Chengfeng Ye
2023-07-05 14:53 ` Guenter Roeck
2023-07-19 18:39 ` Chengfeng Ye
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