[Armadeus-commitlog] armadeus branch, master, updated. armadeus-5.3-29-gef75548

[Sébastien S. <ss...@us...>]

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commit ef755487f6e48889b393f16737a4ef77db2706cb
Author: Sébastien Szymanski <ss...@us...>
Date:   Mon Jan 13 13:45:30 2014 +0100

    [LINUX] 3.12: add author name and details on patch 0480.

-----------------------------------------------------------------------

Summary of changes:
 ...c-core-Update-ext_csd-if-touched-by-ioctl.patch |   57 ++++++++++++++++++++
 1 files changed, 57 insertions(+), 0 deletions(-)

diff --git a/patches/linux/3.12/0480-RFC-mmc-core-Update-ext_csd-if-touched-by-ioctl.patch b/patches/linux/3.12/0480-RFC-mmc-core-Update-ext_csd-if-touched-by-ioctl.patch
index 6ddfb29..6ceeb97 100644
--- a/patches/linux/3.12/0480-RFC-mmc-core-Update-ext_csd-if-touched-by-ioctl.patch
+++ b/patches/linux/3.12/0480-RFC-mmc-core-Update-ext_csd-if-touched-by-ioctl.patch
@@ -1,3 +1,60 @@
+From patchwork Wed Sep 11 05:26:46 2013
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [RFC] mmc: core: Update ext_csd if touched by ioctl
+From: Dirk Behme <dir...@gm...>
+X-Patchwork-Id: 2870291
+Message-Id: <137...@gm...>
+To: lin...@vg...
+Cc: Chris Ball <cj...@la...>, Dirk Behme <dir...@gm...>
+Date: Wed, 11 Sep 2013 07:26:46 +0200
+
+In case an ioctl changes an EXT_CSD register, update the internal ext_csd
+data structure, too. Else the driver's internal ext_csd data structure and
+the EXT_CSD register content doesn't match any more. In this case additional
+ioctls changing the ext_csd would revert the initial one due to the old data
+in the driver's internal ext_csd data.
+
+E.g. using the mmc utils utility to enable the bootpart
+
+mmc bootpart enable 1 0 /dev/mmcblk1
+
+correctly writes to the EXT_CSD structure of the device, but
+doesn't update
+
+card->ext_csd.part_config
+
+Issuing additional MMC_SWITCH commands afterwards use the then (wrong)
+card->ext_csd.part_config. Resulting in an undo of the initial mmc bootpart
+enable.
+
+Fix this by updating the ext_csd in case of an EXT_CSD update ioctl.
+
+Signed-off-by: Dirk Behme <dir...@gm...>
+
+---
+Notes:
+
+This fixes the issue discussed in
+
+http://marc.info/?l=linux-mmc&m=137820629730918
+
+This patch is marked as RFC due to two reasons:
+
+* exporting mmc_update_ext_csd() in core/mmc.c and calling it directly from
+  card/block.c
+* It seems it's not allowed to call mmc_part_add() in mmc_read_ext_csd()
+  several times. So this is disabled by passing an 'update' variable to
+  mmc_read_ext_csd() disabling the mmc_part_add() in case we just want to
+  update the ext_csd variables.
+
+How can this be done better/cleaner?
+
+ drivers/mmc/card/block.c |   14 ++++++++++++++
+ drivers/mmc/core/mmc.c   |   26 ++++++++++++++++++++++----
+ 2 files changed, 36 insertions(+), 4 deletions(-)
+
 diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
 index 1a3163f..0a4bd62 100644
 --- a/drivers/mmc/card/block.c


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