From: Samuel Ortiz <sameo@linux.intel.com>
To: wei_wang@realsil.com.cn
Cc: cjb@laptop.org, devel@linuxdriverproject.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
gregkh@linuxfoundation.org, adam.lee@canonical.com,
rogerable@realtek.com
Subject: Re: [PATCH] mfd:rtsx: Fix issue that booting OS with SD card inserted
Date: Fri, 8 Feb 2013 20:33:03 +0100 [thread overview]
Message-ID: <20130208193303.GD20996@sortiz-mobl> (raw)
In-Reply-To: <1360308268-6911-1-git-send-email-wei_wang@realsil.com.cn>
Hi Wei,
On Fri, Feb 08, 2013 at 03:24:27PM +0800, wei_wang@realsil.com.cn wrote:
> From: Wei WANG <wei_wang@realsil.com.cn>
>
> Realtek card reader supports both SD and MS card. According to the
> settings of rtsx MFD driver, SD host will be probed before MS host.
> If we boot/reboot Linux with SD card inserted, the resetting flow of SD
> card will succeed, and the following resetting flow of MS is sure to fail.
> Then MS upper-level driver will ask rtsx driver to turn power off. This
> request leads to the result that the following SD commands fail and SD card
> can't be accessed again.
>
> In this commit, Realtek's SD and MS host driver will check whether the card
> that upper driver requesting is the one existing in the slot. If not, Realtek's
> host driver will refuse the operation to make sure the exlusive accessing
> at the same time.
>
> Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
> ---
> drivers/memstick/host/rtsx_pci_ms.c | 7 +++++++
> drivers/mfd/rtsx_pcr.c | 30 ++++++++++++++++++++++++++++++
> drivers/mmc/host/rtsx_pci_sdmmc.c | 18 ++++++++++++++++++
> include/linux/mfd/rtsx_pci.h | 2 ++
> 4 files changed, 57 insertions(+)
Patch applied, thanks.
Cheers,
Samuel.
--
Intel Open Source Technology Centre
http://oss.intel.com/
prev parent reply other threads:[~2013-02-08 19:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-08 7:24 [PATCH] mfd:rtsx: Fix issue that booting OS with SD card inserted wei_wang
2013-02-08 19:33 ` Samuel Ortiz [this message]
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