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Fabio Estevam a275b31533 clk: imx51-imx53: Fix UART4/5 registration on i.MX50 and i.MX53 Since commit `59dc3d8c86` ("clk: imx51: uart4, uart5 gates only exist on imx50, imx53") the following warnings are seen on i.MX53: [ 2.776190] ------------[ cut here ]------------ [ 2.780948] WARNING: CPU: 0 PID: 1 at ../drivers/clk/clk.c:811 clk_core_disable+0xc4/0xe0 [ 2.789145] Modules linked in: [ 2.792236] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc7-next-20180115 #1 [ 2.799735] Hardware name: Freescale i.MX53 (Device Tree Support) [ 2.805845] Backtrace: [ 2.808329] [<c010d1a0>] (dump_backtrace) from [<c010d460>] (show_stack+0x18/0x1c) [ 2.815919] r7:00000000 r6:60000093 r5:00000000 r4:c10798d4 [ 2.821607] [<c010d448>] (show_stack) from [<c0a353ec>] (dump_stack+0xb4/0xe8) [ 2.828854] [<c0a35338>] (dump_stack) from [<c0126144>] (__warn+0xf0/0x11c) [ 2.835837] r9:00000000 r8:0000032b r7:00000009 r6:c0d429f8 r5:00000000 r4:00000000 [ 2.843601] [<c0126054>] (__warn) from [<c0126288>] (warn_slowpath_null+0x44/0x50) [ 2.851191] r8:c1008908 r7:c0e08874 r6:c04bfac8 r5:0000032b r4:c0d429f8 [ 2.857913] [<c0126244>] (warn_slowpath_null) from [<c04bfac8>] (clk_core_disable+0xc4/0xe0) [ 2.866369] r6:dc02bb00 r5:dc02a980 r4:dc02a980 [ 2.871011] [<c04bfa04>] (clk_core_disable) from [<c04c0e54>] (clk_core_disable_lock+0x20/0x2c) [ 2.879726] r5:dc02a980 r4:80000013 [ 2.883323] [<c04c0e34>] (clk_core_disable_lock) from [<c04c0e84>] (clk_disable+0x24/0x28) [ 2.891604] r5:c0f6b3e4 r4:0000001c [ 2.895209] [<c04c0e60>] (clk_disable) from [<c0f2340c>] (imx_clk_disable_uart+0x50/0x68) [ 2.903412] [<c0f233bc>] (imx_clk_disable_uart) from [<c010277c>] (do_one_initcall+0x50/0x19c) [ 2.912043] r7:c0e08874 r6:c0f63854 r5:c0f233bc r4:ffffe000 [ 2.917726] [<c010272c>] (do_one_initcall) from [<c0f00f00>] (kernel_init_freeable+0x118/0x1d0) [ 2.926447] r9:c0f63858 r8:000000f0 r7:c0e08874 r6:c0f63854 r5:c107b500 r4:c0f75260 [ 2.934220] [<c0f00de8>] (kernel_init_freeable) from [<c0a4a5f0>] (kernel_init+0x10/0x118) [ 2.942506] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0a4a5e0 [ 2.950351] r4:00000000 [ 2.952908] [<c0a4a5e0>] (kernel_init) from [<c01010b4>] (ret_from_fork+0x14/0x20) [ 2.960496] Exception stack(0xdc05dfb0 to 0xdc05dff8) [ 2.965569] dfa0: 00000000 00000000 00000000 00000000 [ 2.973768] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 2.981965] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 2.988596] r5:c0a4a5e0 r4:00000000 [ 2.992188] ---[ end trace 346e26f708876edd ]--- [ 2.997420] ------------[ cut here ]------------ In order to fix the problem UART4/5 registration needs to happen only on i.MX50 and i.MX53. So let mx51_clocks_init() register only UART1-3 and mx50_clocks_init()/mx53_clocks_init register all the UART1-5 ports. Fixes: `59dc3d8c86` ("clk: imx51: uart4, uart5 gates only exist on imx50, imx53") Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>		History 2018-02-22 11:27:30 +08:00
arch	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
block	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
certs	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
crypto	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
Documentation	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
drivers	clk: imx51-imx53: Fix UART4/5 registration on i.MX50 and i.MX53	2018-02-22 11:27:30 +08:00
firmware	kbuild: remove all dummy assignments to obj-	2017-11-18 11:46:06 +09:00
fs	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
include	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
init	membarrier: Provide core serializing command, *_SYNC_CORE	2018-02-05 21:35:03 +01:00
ipc	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
kernel	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
lib	Kbuild updates for v4.16 (2nd)	2018-02-09 19:32:41 -08:00
LICENSES	LICENSES: Add MPL-1.1 license	2018-01-06 10:59:44 -07:00
mm	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
net	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
samples	sample/bpf: fix erspan metadata	2018-02-06 11:32:49 -05:00
scripts	Kbuild updates for v4.16 (2nd)	2018-02-09 19:32:41 -08:00
security	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
sound	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
tools	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-02-09 15:34:18 -08:00
usr	initramfs: fix initramfs rebuilds w/ compression after disabling	2017-11-03 07:39:19 -07:00
virt	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
.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	scripts/package: snap-pkg target	2017-12-13 00:00:18 +09:00
.mailmap	mailmap: update Mark Yao's email address	2018-01-04 16:45:09 -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	Kbuild updates for v4.15	2017-11-17 17:45:29 -08:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
MAINTAINERS	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
Makefile	Linux 4.16-rc1	2018-02-11 15:04:29 -08:00
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.