This is a note to let you know that I've just added the patch titled
mmc: longer timeout for long read time quirk
to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-longer-timeout-for-long-read-time-quirk.patch
and it can be found in the queue-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 32ecd320db39bcb007679ed42f283740641b81ea Mon Sep 17 00:00:00 2001
From: Matt Gumbel <matthew.k.gumbel@xxxxxxxxx>
Date: Fri, 20 May 2016 10:33:46 +0300
Subject: mmc: longer timeout for long read time quirk
From: Matt Gumbel <matthew.k.gumbel@xxxxxxxxx>
commit 32ecd320db39bcb007679ed42f283740641b81ea upstream.
008GE0 Toshiba mmc in some Intel Baytrail tablets responds to
MMC_SEND_EXT_CSD in 450-600ms.
This patch will...
() Increase the long read time quirk timeout from 300ms to 600ms. Original
author of that quirk says 300ms was only a guess and that the number
may need to be raised in the future.
() Add this specific MMC to the quirk
Signed-off-by: Matt Gumbel <matthew.k.gumbel@xxxxxxxxx>
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/card/block.c | 5 +++--
drivers/mmc/core/core.c | 4 ++--
2 files changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2494,11 +2494,12 @@ static const struct mmc_fixup blk_fixups
MMC_QUIRK_BLK_NO_CMD23),
/*
- * Some Micron MMC cards needs longer data read timeout than
- * indicated in CSD.
+ * Some MMC cards need longer data read timeout than indicated in CSD.
*/
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
MMC_QUIRK_LONG_READ_TIME),
+ MMC_FIXUP("008GE0", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_LONG_READ_TIME),
/*
* On these Samsung MoviNAND parts, performing secure erase or
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -868,11 +868,11 @@ void mmc_set_data_timeout(struct mmc_dat
/*
* Some cards require longer data read timeout than indicated in CSD.
* Address this by setting the read timeout to a "reasonably high"
- * value. For the cards tested, 300ms has proven enough. If necessary,
+ * value. For the cards tested, 600ms has proven enough. If necessary,
* this value can be increased if other problematic cards require this.
*/
if (mmc_card_long_read_time(card) && data->flags & MMC_DATA_READ) {
- data->timeout_ns = 300000000;
+ data->timeout_ns = 600000000;
data->timeout_clks = 0;
}
Patches currently in stable-queue which might be from matthew.k.gumbel@xxxxxxxxx are
queue-4.5/mmc-longer-timeout-for-long-read-time-quirk.patch
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