linux

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-13 07:31:07 +00:00

No description

C 96.8%
Assembly 0.9%
Rust 0.7%
Shell 0.6%
Python 0.5%
Other 0.3%

Find a file

Benoît Thébaudeau f2264bb027 mmc: sdhci-esdhc-imx: Fix i.MX53 eSDHCv3 clock commit `499ed50f60` upstream. Commit `5143c953a7` ("mmc: sdhci-esdhc-imx: Allow all supported prescaler values") made it possible to set SYSCTL.SDCLKFS to 0 in SDR mode, thus bypassing the SD clock frequency prescaler, in order to be able to get higher SD clock frequencies in some contexts. However, that commit missed the fact that this value is illegal on the eSDHCv3 instance of the i.MX53. This seems to be the only exception on i.MX, this value being legal even for the eSDHCv2 instances of the i.MX53. Fix this issue by changing the minimum prescaler value if the i.MX53 eSDHCv3 is detected. According to the i.MX53 reference manual, if DLLCTRL[10] can be set, then the controller is eSDHCv3, else it is eSDHCv2. This commit fixes the following issue, which was preventing the i.MX53 Loco (IMX53QSB) board from booting Linux 4.15.0-rc5: [ 1.882668] mmcblk1: error -84 transferring data, sector 2048, nr 8, cmd response 0x900, card status 0xc00 [ 2.002255] mmcblk1: error -84 transferring data, sector 2050, nr 6, cmd response 0x900, card status 0xc00 [ 12.645056] mmc1: Timeout waiting for hardware interrupt. [ 12.650473] mmc1: sdhci: ============ SDHCI REGISTER DUMP =========== [ 12.656921] mmc1: sdhci: Sys addr: 0x00000000 \| Version: 0x00001201 [ 12.663366] mmc1: sdhci: Blk size: 0x00000004 \| Blk cnt: 0x00000000 [ 12.669813] mmc1: sdhci: Argument: 0x00000000 \| Trn mode: 0x00000013 [ 12.676258] mmc1: sdhci: Present: 0x01f8028f \| Host ctl: 0x00000013 [ 12.682703] mmc1: sdhci: Power: 0x00000002 \| Blk gap: 0x00000000 [ 12.689148] mmc1: sdhci: Wake-up: 0x00000000 \| Clock: 0x0000003f [ 12.695594] mmc1: sdhci: Timeout: 0x0000008e \| Int stat: 0x00000000 [ 12.702039] mmc1: sdhci: Int enab: 0x107f004b \| Sig enab: 0x107f004b [ 12.708485] mmc1: sdhci: AC12 err: 0x00000000 \| Slot int: 0x00001201 [ 12.714930] mmc1: sdhci: Caps: 0x07eb0000 \| Caps_1: 0x08100810 [ 12.721375] mmc1: sdhci: Cmd: 0x0000163a \| Max curr: 0x00000000 [ 12.727821] mmc1: sdhci: Resp[0]: 0x00000920 \| Resp[1]: 0x00000000 [ 12.734265] mmc1: sdhci: Resp[2]: 0x00000000 \| Resp[3]: 0x00000000 [ 12.740709] mmc1: sdhci: Host ctl2: 0x00000000 [ 12.745157] mmc1: sdhci: ADMA Err: 0x00000001 \| ADMA Ptr: 0xc8049200 [ 12.751601] mmc1: sdhci: ============================================ [ 12.758110] print_req_error: I/O error, dev mmcblk1, sector 2050 [ 12.764135] Buffer I/O error on dev mmcblk1p1, logical block 0, lost sync page write [ 12.775163] EXT4-fs (mmcblk1p1): mounted filesystem without journal. Opts: (null) [ 12.782746] VFS: Mounted root (ext4 filesystem) on device 179:9. [ 12.789151] mmcblk1: response CRC error sending SET_BLOCK_COUNT command, card status 0x900 Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com> Reported-by: Wladimir J. van der Laan <laanwj@gmail.com> Tested-by: Wladimir J. van der Laan <laanwj@gmail.com> Fixes: `5143c953a7` ("mmc: sdhci-esdhc-imx: Allow all supported prescaler values") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2018-01-23 19:58:13 +01:00
arch	powerpc/powernv: Check device-tree for RFI flush settings	2018-01-23 19:58:11 +01:00
block	block: don't let passthrough IO go into .make_request_fn()	2018-01-02 20:31:05 +01:00
certs	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
crypto	crypto: algapi - fix NULL dereference in crypto_remove_spawns()	2018-01-17 09:45:23 +01:00
Documentation	x86/spectre: Add boot time option to select Spectre v2 mitigation	2018-01-17 09:45:29 +01:00
drivers	mmc: sdhci-esdhc-imx: Fix i.MX53 eSDHCv3 clock	2018-01-23 19:58:13 +01:00
firmware	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fs	x86 / CPU: Always show current CPU frequency in /proc/cpuinfo	2018-01-10 09:31:20 +01:00
include	delayacct: Account blkio completion on the correct task	2018-01-23 19:58:13 +01:00
init	x86/mm/pti: Add infrastructure for page table isolation	2018-01-02 20:30:56 +01:00
ipc	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kernel	delayacct: Account blkio completion on the correct task	2018-01-23 19:58:13 +01:00
lib	x86/unwind: Rename unwinder config options to 'CONFIG_UNWINDER_*'	2017-12-25 14:26:13 +01:00
mm	mm/sparse.c: wrong allocation for mem_section	2018-01-10 09:31:17 +01:00
net	af_key: fix buffer overread in parse_exthdrs()	2018-01-23 19:58:12 +01:00
samples	samples/bpf: adjust rlimit RLIMIT_MEMLOCK for xdp1	2017-12-20 10:10:31 +01:00
scripts	objtool: Fix seg fault with gold linker	2018-01-23 19:58:13 +01:00
security	security/Kconfig: Correct the Documentation reference for PTI	2018-01-17 09:45:30 +01:00
sound	ALSA: hda - Apply the existing quirk to iMac 14,1	2018-01-23 19:58:12 +01:00
tools	objtool: Fix seg fault caused by missing parameter	2018-01-23 19:58:09 +01:00
usr	initramfs: fix initramfs rebuilds w/ compression after disabling	2017-11-03 07:39:19 -07:00
virt	KVM: Fix stack-out-of-bounds read in write_mmio	2018-01-17 09:45:17 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	Add hch to .get_maintainer.ignore	2015-08-21 14:30:10 -07:00
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	kbuild: Add support to generate LLVM assembly files	2017-04-25 08:13:52 +09:00
.mailmap	.mailmap: Add Maciej W. Rozycki's Imagination e-mail address	2017-11-10 12:16:15 -08:00
COPYING	[PATCH] update FSF address in COPYING	2005-09-10 10:06:29 -07:00
CREDITS	MAINTAINERS: update TPM driver infrastructure changes	2017-11-09 17:58:40 -08:00
Kbuild	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
MAINTAINERS	Merge branch 'akpm' (patches from Andrew)	2017-11-09 18:26:51 -08:00
Makefile	Linux 4.14.14	2018-01-17 09:45:30 +01:00
README	README: add a new README file, pointing to the Documentation/	2016-10-24 08:12:35 -02:00

README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

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.