This is a note to let you know that I've just added the patch titled
mmc: sdhci-tegra: Fix SDHCI_RESET_ALL for CQHCI
to the 6.0-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-tegra-fix-sdhci_reset_all-for-cqhci.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 836078449464e6af3b66ae6652dae79af176f21e Mon Sep 17 00:00:00 2001
From: Brian Norris <briannorris@xxxxxxxxxxxx>
Date: Wed, 26 Oct 2022 12:42:07 -0700
Subject: mmc: sdhci-tegra: Fix SDHCI_RESET_ALL for CQHCI
From: Brian Norris <briannorris@xxxxxxxxxxxx>
commit 836078449464e6af3b66ae6652dae79af176f21e upstream.
[[ NOTE: this is completely untested by the author, but included solely
because, as noted in commit df57d73276b8 ("mmc: sdhci-pci: Fix
SDHCI_RESET_ALL for CQHCI for Intel GLK-based controllers"), "other
drivers using CQHCI might benefit from a similar change, if they
also have CQHCI reset by SDHCI_RESET_ALL." We've now seen the same
bug on at least MSM, Arasan, and Intel hardware. ]]
SDHCI_RESET_ALL resets will reset the hardware CQE state, but we aren't
tracking that properly in software. When out of sync, we may trigger
various timeouts.
It's not typical to perform resets while CQE is enabled, but this may
occur in some suspend or error recovery scenarios.
Include this fix by way of the new sdhci_and_cqhci_reset() helper.
This patch depends on (and should not compile without) the patch
entitled "mmc: cqhci: Provide helper for resetting both SDHCI and
CQHCI".
Fixes: 3c4019f97978 ("mmc: tegra: HW Command Queue Support for Tegra SDMMC")
Signed-off-by: Brian Norris <briannorris@xxxxxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20221026124150.v4.5.I418c9eaaf754880fcd2698113e8c3ef821a944d7@changeid
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-tegra.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -28,6 +28,7 @@
#include <soc/tegra/common.h>
+#include "sdhci-cqhci.h"
#include "sdhci-pltfm.h"
#include "cqhci.h"
@@ -367,7 +368,7 @@ static void tegra_sdhci_reset(struct sdh
const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
u32 misc_ctrl, clk_ctrl, pad_ctrl;
- sdhci_reset(host, mask);
+ sdhci_and_cqhci_reset(host, mask);
if (!(mask & SDHCI_RESET_ALL))
return;
Patches currently in stable-queue which might be from briannorris@xxxxxxxxxxxx are
queue-6.0/mmc-sdhci_am654-fix-sdhci_reset_all-for-cqhci.patch
queue-6.0/mmc-sdhci-brcmstb-fix-sdhci_reset_all-for-cqhci.patch
queue-6.0/mmc-sdhci-of-arasan-fix-sdhci_reset_all-for-cqhci.patch
queue-6.0/mmc-sdhci-tegra-fix-sdhci_reset_all-for-cqhci.patch
queue-6.0/mmc-cqhci-provide-helper-for-resetting-both-sdhci-and-cqhci.patch
