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Filename Latest commit message Latest commit date
Adrian Hunter 3d77c12f30 mmc: sdhci-pci: Fix SDHCI_RESET_ALL for CQHCI for Intel GLK-based controllers
commit df57d73276b863af1debc48546b0e59e44998a55 upstream.

For Intel controllers, SDHCI_RESET_ALL resets also CQHCI registers.
Normally, SDHCI_RESET_ALL is not used while CQHCI is enabled, but that can
happen on the error path. e.g. if mmc_cqe_recovery() fails, mmc_blk_reset()
is called which, for a eMMC that does not support HW Reset, will cycle the
bus power and the driver will perform SDHCI_RESET_ALL.

So whenever performing SDHCI_RESET_ALL ensure CQHCI is deactivated.
That will force the driver to reinitialize CQHCI when it is next used.

A similar change was done already for sdhci-msm, and other drivers using
CQHCI might benefit from a similar change, if they also have CQHCI reset
by SDHCI_RESET_ALL.

Fixes: 8ee82bda23 ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
Cc: stable@vger.kernel.org # 5.4.x: 0ffa6cfbd949: mmc: cqhci: Add cqhci_deactivate()
Cc: stable@vger.kernel.org # 5.4+
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20200819121848.16967-1-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-09 19:12:33 +02:00
arch arm64: dts: mt7622: add reset node for mmc device 2020-09-09 19:12:33 +02:00
block blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART 2020-09-03 11:27:01 +02:00
certs
crypto crypto: af_alg - Work around empty control messages without MSG_MORE 2020-09-03 11:27:05 +02:00
Documentation mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings 2020-09-09 19:12:33 +02:00
drivers mmc: sdhci-pci: Fix SDHCI_RESET_ALL for CQHCI for Intel GLK-based controllers 2020-09-09 19:12:33 +02:00
fs btrfs: fix potential deadlock in the search ioctl 2020-09-09 19:12:31 +02:00
include include/linux/log2.h: add missing () around n in roundup_pow_of_two() 2020-09-09 19:12:29 +02:00
init
ipc
kernel kbuild: add variables for compression tools 2020-09-03 11:27:10 +02:00
lib
LICENSES
mm mm/vunmap: add cond_resched() in vunmap_pmd_range 2020-09-03 11:26:52 +02:00
net net: core: use listified Rx for GRO_NORMAL in napi_gro_receive() 2020-09-09 19:12:31 +02:00
samples
scripts kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables 2020-09-03 11:27:10 +02:00
security
sound ALSA: hda/realtek - Improved routing for Thinkpad X1 7th/8th Gen 2020-09-09 19:12:33 +02:00
tools perf jevents: Fix suspicious code in fixregex() 2020-09-09 19:12:28 +02:00
usr
virt KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set 2020-08-26 10:41:08 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.63 2020-09-05 11:22:51 +02:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.