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Commit f85d9b9c authored by Brian Norris's avatar Brian Norris Committed by Greg Kroah-Hartman
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mmc: sdhci-tegra: Fix SDHCI_RESET_ALL for CQHCI

commit 83607844 upstream.

[[ NOTE: this is completely untested by the author, but included solely
    because, as noted in commit df57d732 ("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: 3c4019f9

 ("mmc: tegra: HW Command Queue Support for Tegra SDMMC")
Signed-off-by: default avatarBrian Norris <briannorris@chromium.org>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221026124150.v4.5.I418c9eaaf754880fcd2698113e8c3ef821a944d7@changeid
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d684d516
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