This is a note to let you know that I've just added the patch titled
mmc: cqhci: Increase recovery halt timeout
to the 5.15-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-cqhci-increase-recovery-halt-timeout.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b578d5d18e929aa7c007a98cce32657145dde219 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Date: Fri, 3 Nov 2023 10:47:16 +0200
Subject: mmc: cqhci: Increase recovery halt timeout
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
commit b578d5d18e929aa7c007a98cce32657145dde219 upstream.
Failing to halt complicates the recovery. Additionally, unless the card or
controller are stuck, which is expected to be very rare, then the halt
should succeed, so it is better to wait. Set a large timeout.
Fixes: a4080225f51d ("mmc: cqhci: support for command queue enabled host")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
Link: https://lore.kernel.org/r/20231103084720.6886-3-adrian.hunter@xxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/cqhci-core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/mmc/host/cqhci-core.c
+++ b/drivers/mmc/host/cqhci-core.c
@@ -977,10 +977,10 @@ static bool cqhci_halt(struct mmc_host *
/*
* After halting we expect to be able to use the command line. We interpret the
* failure to halt to mean the data lines might still be in use (and the upper
- * layers will need to send a STOP command), so we set the timeout based on a
- * generous command timeout.
+ * layers will need to send a STOP command), however failing to halt complicates
+ * the recovery, so set a timeout that would reasonably allow I/O to complete.
*/
-#define CQHCI_START_HALT_TIMEOUT 5
+#define CQHCI_START_HALT_TIMEOUT 500
static void cqhci_recovery_start(struct mmc_host *mmc)
{
Patches currently in stable-queue which might be from adrian.hunter@xxxxxxxxx are
queue-5.15/perf-inject-fix-gen_elf_text_offset-for-jit.patch
queue-5.15/mmc-block-be-sure-to-wait-while-busy-in-cqe-error-recovery.patch
queue-5.15/mmc-block-do-not-lose-cache-flush-during-cqe-error-recovery.patch
queue-5.15/mmc-block-retry-commands-in-cqe-error-recovery.patch
queue-5.15/mmc-cqhci-warn-of-halt-or-task-clear-failure.patch
queue-5.15/mmc-cqhci-fix-task-clearing-in-cqe-error-recovery.patch
queue-5.15/mmc-cqhci-increase-recovery-halt-timeout.patch
