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BOUGH CHEN ff86bb4dc6 mmc: sdhci-esdhc-imx: correct the fix of ERR004536 commit `e30be063d6` upstream. Commit `18094430d6` ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix") involve the fix of ERR004536, but the fix is incorrect. Double confirm with IC, need to clear the bit 7 of register 0x6c rather than set this bit 7. Here is the definition of bit 7 of 0x6c: 0: enable the new IC fix for ERR004536 1: do not use the IC fix, keep the same as before Find this issue on i.MX845s-evk board when enable CMDQ, and let system in heavy loading. root@imx8mmevk:~# dd if=/dev/mmcblk2 of=/dev/null bs=1M & root@imx8mmevk:~# memtester 1000M > /dev/zero & root@imx8mmevk:~# [ 139.897220] mmc2: cqhci: timeout for tag 16 [ 139.901417] mmc2: cqhci: ============ CQHCI REGISTER DUMP =========== [ 139.907862] mmc2: cqhci: Caps: 0x0000310a \| Version: 0x00000510 [ 139.914311] mmc2: cqhci: Config: 0x00001001 \| Control: 0x00000000 [ 139.920753] mmc2: cqhci: Int stat: 0x00000000 \| Int enab: 0x00000006 [ 139.927193] mmc2: cqhci: Int sig: 0x00000006 \| Int Coal: 0x00000000 [ 139.933634] mmc2: cqhci: TDL base: 0x7809c000 \| TDL up32: 0x00000000 [ 139.940073] mmc2: cqhci: Doorbell: 0x00030000 \| TCN: 0x00000000 [ 139.946518] mmc2: cqhci: Dev queue: 0x00010000 \| Dev Pend: 0x00010000 [ 139.952967] mmc2: cqhci: Task clr: 0x00000000 \| SSC1: 0x00011000 [ 139.959411] mmc2: cqhci: SSC2: 0x00000001 \| DCMD rsp: 0x00000000 [ 139.965857] mmc2: cqhci: RED mask: 0xfdf9a080 \| TERRI: 0x00000000 [ 139.972308] mmc2: cqhci: Resp idx: 0x0000002e \| Resp arg: 0x00000900 [ 139.978761] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== [ 139.985214] mmc2: sdhci: Sys addr: 0xb2c19000 \| Version: 0x00000002 [ 139.991669] mmc2: sdhci: Blk size: 0x00000200 \| Blk cnt: 0x00000400 [ 139.998127] mmc2: sdhci: Argument: 0x40110400 \| Trn mode: 0x00000033 [ 140.004618] mmc2: sdhci: Present: 0x01088a8f \| Host ctl: 0x00000030 [ 140.011113] mmc2: sdhci: Power: 0x00000002 \| Blk gap: 0x00000080 [ 140.017583] mmc2: sdhci: Wake-up: 0x00000008 \| Clock: 0x0000000f [ 140.024039] mmc2: sdhci: Timeout: 0x0000008f \| Int stat: 0x00000000 [ 140.030497] mmc2: sdhci: Int enab: 0x107f4000 \| Sig enab: 0x107f4000 [ 140.036972] mmc2: sdhci: AC12 err: 0x00000000 \| Slot int: 0x00000502 [ 140.043426] mmc2: sdhci: Caps: 0x07eb0000 \| Caps_1: 0x8000b407 [ 140.049867] mmc2: sdhci: Cmd: 0x00002c1a \| Max curr: 0x00ffffff [ 140.056314] mmc2: sdhci: Resp[0]: 0x00000900 \| Resp[1]: 0xffffffff [ 140.062755] mmc2: sdhci: Resp[2]: 0x328f5903 \| Resp[3]: 0x00d00f00 [ 140.069195] mmc2: sdhci: Host ctl2: 0x00000008 [ 140.073640] mmc2: sdhci: ADMA Err: 0x00000007 \| ADMA Ptr: 0x7809c108 [ 140.080079] mmc2: sdhci: ============================================ [ 140.086662] mmc2: running CQE recovery Fixes: `18094430d6` ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix") Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-03-05 17:58:53 +01:00
arch	KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1	2019-03-05 17:58:52 +01:00
block	blk-mq: fix a hung issue when fsync	2019-02-20 10:25:36 +01:00
certs	export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()	2018-08-22 23:21:44 +09:00
crypto	net: crypto set sk to NULL when af_alg_release.	2019-02-23 09:07:24 +01:00
Documentation	dt-bindings: eeprom: at24: add "atmel,24c2048" compatible string	2019-02-20 10:25:35 +01:00
drivers	mmc: sdhci-esdhc-imx: correct the fix of ERR004536	2019-03-05 17:58:53 +01:00
firmware	kbuild: remove all dummy assignments to obj-	2017-11-18 11:46:06 +09:00
fs	writeback: synchronize sync(2) against cgroup writeback membership switches	2019-03-05 17:58:50 +01:00
include	net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP	2019-03-05 17:58:51 +01:00
init	kbuild: Disable LD_DEAD_CODE_DATA_ELIMINATION with ftrace & GCC <= 4.7	2019-01-22 21:40:34 +01:00
ipc	ipc/shm.c: use ERR_CAST() for shm_lock() error return	2018-10-05 16:32:04 -07:00
kernel	locking/rwsem: Fix (possible) missed wakeup	2019-03-05 17:58:49 +01:00
lib	lib/test_rhashtable: Make test_insert_dup() allocate its hash table dynamically	2019-02-12 19:47:21 +01:00
LICENSES	LICENSES: Remove CC-BY-SA-4.0 license text	2018-10-18 11:28:50 +02:00
mm	writeback: synchronize sync(2) against cgroup writeback membership switches	2019-03-05 17:58:50 +01:00
net	cfg80211: extend range deviation for DMG	2019-03-05 17:58:52 +01:00
samples	samples: mei: use /dev/mei0 instead of /dev/mei	2019-02-15 08:10:11 +01:00
scripts	scripts/gdb: fix lx-version string output	2019-02-12 19:47:20 +01:00
security	KEYS: always initialize keyring_index_key::desc_len	2019-02-27 10:09:00 +01:00
sound	ASoC: imx-audmux: change snprintf to scnprintf for possible overflow	2019-03-05 17:58:47 +01:00
tools	kvm: selftests: Fix region overlap check in kvm_util	2019-03-05 17:58:52 +01:00
usr	initramfs: move gen_initramfs_list.sh from scripts/ to usr/	2018-08-22 23:21:44 +09:00
virt	kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)	2019-02-12 19:47:25 +01:00
.clang-format	clang-format: Set IndentWrappedFunctionNames false	2018-08-01 18:38:51 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	Kbuild updates for v4.17 (2nd)	2018-04-15 17:21:30 -07:00
.mailmap	libnvdimm-for-4.19_misc	2018-08-25 18:13:10 -07:00
COPYING	COPYING: use the new text with points to the license files	2018-03-23 12:41:45 -06:00
CREDITS	9p: remove Ron Minnich from MAINTAINERS	2018-08-17 16:20:26 -07:00
Kbuild	Kbuild updates for v4.15	2017-11-17 17:45:29 -08:00
Kconfig	kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt	2018-08-02 08:06:55 +09:00
MAINTAINERS	MAINTAINERS: Add Sasha as a stable branch maintainer	2018-12-01 09:37:25 +01:00
Makefile	Linux 4.19.26	2019-02-27 10:09:03 +01:00
README	Docs: Added a pointer to the formatted docs to README	2018-03-21 09:02:53 -06:00

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.