From mboxrd@z Thu Jan 1 00:00:00 1970
From: daniel.lezcano@linaro.org (Daniel Lezcano)
Date: Mon, 29 Jun 2015 11:19:34 +0200
Subject: [RESEND PATCH v3] clocksource: exynos_mct: fix for sleeping in
atomic ctx handling cpu hotplug notif.
In-Reply-To: <1435324984-7328-1-git-send-email-d.eppel@samsung.com>
References: <1426151496-5509-1-git-send-email-d.eppel@samsung.com>
<1435324984-7328-1-git-send-email-d.eppel@samsung.com>
Message-ID: <55910DA6.4070404@linaro.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org
On 06/26/2015 03:23 PM, Damian Eppel wrote:
> This is to fix an issue of sleeping in atomic context when processing
> hotplug notifications in Exynos MCT(Multi-Core Timer).
> The issue was reproducible on Exynos 3250 (Rinato board) and Exynos 5420
> (Arndale Octa board).
>
> Whilst testing cpu hotplug events on kernel configured with DEBUG_PREEMPT
> and DEBUG_ATOMIC_SLEEP we get following BUG message, caused by calling
> request_irq() and free_irq() in the context of hotplug notification
> (which is in this case atomic context).
Applied as a 4.2 fix.
Should it be tagged stable@ ?
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