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Filename Latest commit message Latest commit date
Matthias Kaehlcke 3c66eb4ba1 tty: serial: qcom_geni_serial: Fix wrap around of TX buffer 
Before commit a1fee899e5 ("tty: serial: qcom_geni_serial: Fix
softlock") the size of TX transfers was limited to the TX FIFO size,
and wrap arounds of the UART circular buffer were split into two
transfers. With the commit wrap around are allowed within a transfer.
The TX FIFO of the geni serial port uses a word size of 4 bytes. In
case of a circular buffer wrap within a transfer the driver currently
may write an incomplete word to the FIFO, with some bytes containing
data from the circular buffer and others being zero. Since the
transfer isn't completed yet the zero bytes are sent as if they were
actual data.

Handle wrap arounds of the TX buffer properly and ensure that words
written to the TX FIFO always contain valid data (unless the transfer
is completed).

Fixes: a1fee899e5 ("tty: serial: qcom_geni_serial: Fix softlock")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Tested-by: Ryan Case <ryandcase@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-20 16:26:28 +01:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
block blk-mq: punt failed direct issue to dispatch list 2018-12-07 08:16:11 -07:00
certs
crypto crypto: user - Disable statistics interface 2018-12-07 13:56:08 +08:00
Documentation dt-bindings: serial: sh-sci: Document r8a774c0 bindings 2018-12-19 11:21:59 +01:00
drivers tty: serial: qcom_geni_serial: Fix wrap around of TX buffer 2018-12-20 16:26:28 +01:00
firmware
fs a fix for smb3 direct i/o, a fix for CIFS DFS for stable and a minor cifs Kconfig fix 2018-12-09 10:15:13 -08:00
include Fonts: New Terminus large console font 2018-12-19 10:42:08 +01:00
init initramfs: clean old path before creating a hardlink 2018-11-30 14:56:14 -08:00
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
lib Fonts: New Terminus large console font 2018-12-19 10:42:08 +01:00
LICENSES
mm dax fixes 4.20-rc6 2018-12-09 09:54:04 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
samples
scripts Fixes for stackleak 2018-12-07 13:13:07 -08:00
security selinux/stable-4.20 PR 20181129 2018-11-29 10:15:06 -08:00
sound ALSA: hda/realtek: Fix mic issue on Acer AIO Veriton Z4860G/Z6860G 2018-12-05 16:39:59 +01:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS MAINTAINERS: change Sparse's maintainer 2018-11-25 09:17:43 -08:00
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
Makefile Linux 4.20-rc6 2018-12-09 15:31:00 -08:00
README

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.