This is a note to let you know that I've just added the patch titled
mmc: sdhci: fix data timeout (part 1)
to the 4.4-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-sdhci-fix-data-timeout-part-1.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fafcfda9e78cae8796d1799f14e6457790797555 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Date: Tue, 26 Jan 2016 13:40:58 +0000
Subject: mmc: sdhci: fix data timeout (part 1)
From: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
commit fafcfda9e78cae8796d1799f14e6457790797555 upstream.
The data timeout gives the minimum amount of time that should be
waited before timing out if no data is received from the card.
Simply dividing the nanosecond part by 1000 does not give this
required guarantee, since such a division rounds down. Use
DIV_ROUND_UP() to give the desired timeout.
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Tested-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -666,7 +666,7 @@ static u8 sdhci_calc_timeout(struct sdhc
if (!data)
target_timeout = cmd->busy_timeout * 1000;
else {
- target_timeout = data->timeout_ns / 1000;
+ target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000);
if (host->clock)
target_timeout += data->timeout_clks / host->clock;
}
Patches currently in stable-queue which might be from rmk+kernel@xxxxxxxxxxxxxxxx are
queue-4.4/mmc-sdhci-fix-data-timeout-part-2.patch
queue-4.4/mmc-sdhci-fix-data-timeout-part-1.patch
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