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sunghwan jung ad5dbfc123 Revert "usb: storage: Add quirk for Samsung Fit flash" 
This reverts commit 86d92f5465,
which fix the timeout issue for "Samsung Fit Flash".

But the commit affects not only "Samsung Fit Flash" but also other usb
storages that use the same controller and causes severe performance
regression.

 # hdparm -t /dev/sda (without the quirk)
 Timing buffered disk reads: 622 MB in  3.01 seconds = 206.66 MB/sec

 # hdparm -t /dev/sda (with the quirk)
 Timing buffered disk reads: 220 MB in  3.00 seconds =  73.32 MB/sec

The commit author mentioned that "Issue was reproduced after device has
bad block", so this quirk should be applied when we have the timeout
issue with a device that has bad blocks.

We revert the commit so that we apply this quirk by adding kernel
paramters using a bootloader or other ways when we really need it,
without the performance regression with devices that don't have the
issue.

Signed-off-by: sunghwan jung <onenowy@gmail.com>
Link: https://lore.kernel.org/r/20220913114913.3073-1-onenowy@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-22 15:52:31 +02:00
arch arm64: dts: imx8mp: Add snps,gfladj-refclk-lpm-sel quirk to USB nodes 2022-09-22 15:52:30 +02:00
block block-6.0-2022-08-26 2022-08-26 11:05:54 -07:00
certs Kbuild updates for v5.20 2022-08-10 10:40:41 -07:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation dt-bindings: usb: snps,dwc3: Add 'snps,resume-hs-terminations' quirk 2022-09-22 15:52:30 +02:00
drivers Revert "usb: storage: Add quirk for Samsung Fit flash" 2022-09-22 15:52:31 +02:00
fs 5 cifs/smb3 fixes, all also for stable 2022-09-02 16:20:24 -07:00
include media: uvcvideo: move uvc_format_desc to common header 2022-09-22 15:52:30 +02:00
init arm64 fixes for -rc3 2022-08-26 11:32:53 -07:00
io_uring io_uring-6.0-2022-09-02 2022-09-02 16:37:01 -07:00
ipc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
kernel Networking fixes for 6.0-rc4, including fixes from bluetooth, bpf 2022-09-01 09:20:42 -07:00
lib This push fixes a boot performance regression due to an unnecessary 2022-08-31 09:47:06 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: pagewalk: Fix race between unmap and page walker 2022-09-03 10:13:13 -07:00
net net/smc: Remove redundant refcount increase 2022-09-01 10:04:45 +02:00
samples Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
scripts Makefile.extrawarn: re-enable -Wformat for clang; take 2 2022-09-04 11:15:50 -07:00
security Landlock fix for v6.0-rc4 2022-09-02 15:24:08 -07:00
sound ALSA: usb-audio: Add quirk for LH Labs Geek Out HD Audio 1V5 2022-08-28 09:42:14 +02:00
tools s390: 2022-09-04 11:27:14 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device() 2022-08-19 04:05:43 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap .mailmap: update Luca Ceresoli's e-mail address 2022-08-28 14:02:46 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS gpio fixes for v6.0-rc4 2022-09-03 21:27:27 -07:00
Makefile Linux 6.0-rc4 2022-09-04 13:10:01 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -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.

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.