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Message-ID: <20140320152812.GB8207@lee--X1>
Date: Thu, 20 Mar 2014 15:28:12 +0000
From: Lee Jones <lee.jones@...aro.org>
To: Guenter Roeck <linux@...ck-us.net>
Cc: linux-kernel@...r.kernel.org, Samuel Ortiz <sameo@...ux.intel.com>,
Michael Brunner <michael.brunner@...tron.com>
Subject: Re: [PATCH] mfd: kempld-core: Fix potential hang-up during boot
> On PXT and COMe-cPC2 boards it is observed that the hardware
> mutex is acquired but not being released during initialization.
> This can result in a hang-up during boot if the driver is built
> into the kernel.
>
> Releasing the mutex twice if it was acquired fixes the problem.
> Subsequent request/release cycles work as expected, so the fix is
> only needed during initialization.
>
> Reviewed-by: Michael Brunner <michael.brunner@...tron.com>
> Tested-by: Michael Brunner <michael.brunner@...tron.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
> drivers/mfd/kempld-core.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
I was going to stop taking patches for this cycle, but as this looks
like a bugfix I'll apply it, thanks.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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