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Lanqing Liu 39f8091926 serial: sprd: Add polling IO support 
In order to access the UART without the interrupts, the kernel uses
the basic polling methods for IO with the device. With these methods
implemented, it is now possible to enable kgdb during early boot over serial.

Signed-off-by: Lanqing Liu <liuhhome@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Link: https://lore.kernel.org/r/f112a741c053ac5fb0637e2f058be81e17f78ccc.1568862391.git.liuhhome@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-04 14:50:01 +02:00
arch
Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux
2019-09-30 10:16:17 -07:00
block
block: fix null pointer dereference in blk_mq_rq_timed_out()
2019-09-27 07:01:25 -06:00
certs
PKCS#7: Refactor verify_pkcs7_signature()
2019-08-05 18:40:18 -04:00
crypto
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
Documentation
Merge tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2019-09-29 19:52:52 -07:00
drivers
serial: sprd: Add polling IO support
2019-10-04 14:50:01 +02:00
fs
Merge tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
2019-09-30 10:25:24 -07:00
include
Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2019-09-30 09:29:53 -07:00
init
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
ipc
ipc/sem.c: convert to use built-in RCU list checking
2019-09-25 17:51:41 -07:00
kernel
Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2019-09-30 09:29:53 -07:00
lib
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
LICENSES
LICENSES: Rename other to deprecated
2019-05-03 06:34:32 -06:00
mm
Merge branch 'hugepage-fallbacks' (hugepatch patches from David Rientjes)
2019-09-28 14:26:47 -07:00
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
samples
Merge tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
2019-09-22 10:58:15 -07:00
scripts
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-09-27 19:37:27 -07:00
security
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
sound
Merge tag 'sound-fix-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
2019-09-24 16:46:16 -07:00
tools
Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2019-09-30 09:29:53 -07:00
usr
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
virt
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2019-09-18 09:49:13 -07:00
.clang-format
clang-format: Update with the latest for_each macro list
2019-08-31 10:00:51 +02:00
.cocciconfig
scripts: add Linux .cocciconfig for coccinelle
2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: set git diff driver for C source code files
2016-10-07 18:46:30 -07:00
.gitignore
Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2019-09-22 10:34:46 -07:00
.mailmap
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2019-09-18 12:34:53 -07:00
COPYING
COPYING: use the new text with points to the license files
2018-03-23 12:41:45 -06:00
CREDITS
CREDITS: Update email address
2019-09-13 17:21:38 +03:00
Kbuild
kbuild: do not descend to ./Kbuild when cleaning
2019-08-21 21:03:58 +09:00
Kconfig
docs: kbuild: convert docs to ReST and rename to *.rst
2019-06-14 14:21:21 -06:00
MAINTAINERS
Merge tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
2019-09-29 11:20:41 -07:00
Makefile
Linux 5.4-rc1
2019-09-30 10:35:40 -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.
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