This is a note to let you know that I've just added the patch titled
mmc: mmci: stm32: fix max busy timeout calculation
to the 6.3-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-mmci-stm32-fix-max-busy-timeout-calculation.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 47b3ad6b7842f49d374a01b054a4b1461a621bdc Mon Sep 17 00:00:00 2001
From: Christophe Kerello <christophe.kerello@xxxxxxxxxxx>
Date: Tue, 13 Jun 2023 15:41:46 +0200
Subject: mmc: mmci: stm32: fix max busy timeout calculation
From: Christophe Kerello <christophe.kerello@xxxxxxxxxxx>
commit 47b3ad6b7842f49d374a01b054a4b1461a621bdc upstream.
The way that the timeout is currently calculated could lead to a u64
timeout value in mmci_start_command(). This value is then cast in a u32
register that leads to mmc erase failed issue with some SD cards.
Fixes: 8266c585f489 ("mmc: mmci: add hardware busy timeout feature")
Signed-off-by: Yann Gautier <yann.gautier@xxxxxxxxxxx>
Signed-off-by: Christophe Kerello <christophe.kerello@xxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230613134146.418016-1-yann.gautier@xxxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/mmci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1735,7 +1735,8 @@ static void mmci_set_max_busy_timeout(st
return;
if (host->variant->busy_timeout && mmc->actual_clock)
- max_busy_timeout = ~0UL / (mmc->actual_clock / MSEC_PER_SEC);
+ max_busy_timeout = U32_MAX / DIV_ROUND_UP(mmc->actual_clock,
+ MSEC_PER_SEC);
mmc->max_busy_timeout = max_busy_timeout;
}
Patches currently in stable-queue which might be from christophe.kerello@xxxxxxxxxxx are
queue-6.3/mmc-mmci-stm32-fix-max-busy-timeout-calculation.patch
