linux-kernel - Re: [PATCH] mmc: dw_mmc: make multiple instances of dw_mci_card

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Message-ID: <CAFbHwiSG6Z0aWuZvrydSjY07rgJpAuPx=9tzQDKc7UbaRTnY6A@mail.gmail.com>
Date:	Wed, 2 May 2012 10:07:45 +0100
From:	Will Newton <will.newton@...il.com>
To:	Thomas Abraham <thomas.abraham@...aro.org>
Cc:	linux-mmc@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	cjb@...top.org, kgene.kim@...sung.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	jh80.chung@...sung.com, tgih.jun@...sung.com, dianders@...gle.com
Subject: Re: [PATCH] mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue

On Tue, May 1, 2012 at 10:57 PM, Thomas Abraham
<thomas.abraham@...aro.org> wrote:
> The variable 'dw_mci_card_workqueue' is a global variable shared between
> multiple instances of the dw_mmc host controller. Due to this, data
> corruption has been noticed when multiple instances of dw_mmc controllers
> are actively reading/writing the media. Fix this by adding a instance
> of 'struct workqueue_struct' for each host instance and removing the
> global 'dw_mci_card_workqueue' instance.
>
> Signed-off-by: Thomas Abraham <thomas.abraham@...aro.org>
> ---
>  drivers/mmc/host/dw_mmc.c  |   14 ++++++--------
>  include/linux/mmc/dw_mmc.h |    1 +
>  2 files changed, 7 insertions(+), 8 deletions(-)

Looks good.

Acked-by: Will Newton <will.newton@...tec.com>
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