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Leo Yan b436f3841f coresight: tmc: Fix bad register address for CLAIM [ Upstream commit `323ed1e0f6` ] Commit `4d3ebd3658` ("coreisght: tmc: Claim device before use") uses CLAIM tag to validate if the device is available, it needs to pass the device base address to access related registers. In the function tmc_etb_disable_hw() it wrongly passes the driver data pointer as register base address, thus it's easily to produce the kernel warning info like below: [ 83.579898] WARNING: CPU: 4 PID: 2970 at drivers/hwtracing/coresight/coresight.c:207 coresight_disclaim_device_unlocked+0x44/0x80 [ 83.591448] Modules linked in: [ 83.594485] CPU: 4 PID: 2970 Comm: uname Not tainted 4.19.0-rc6-00417-g721b509 #110 [ 83.602067] Hardware name: ARM Juno development board (r2) (DT) [ 83.607932] pstate: 80000085 (Nzcv daIf -PAN -UAO) [ 83.612681] pc : coresight_disclaim_device_unlocked+0x44/0x80 [ 83.618375] lr : coresight_disclaim_device_unlocked+0x44/0x80 [ 83.624064] sp : ffff00000fe3ba20 [ 83.627347] x29: ffff00000fe3ba20 x28: ffff80002d430dc0 [ 83.632618] x27: ffff800033177c00 x26: ffff80002eb44480 [ 83.637889] x25: 0000000000000001 x24: ffff800033c72600 [ 83.643160] x23: ffff0000099b11f8 x22: ffff0000099b11c8 [ 83.648430] x21: 0000000000000002 x20: ffff800033a90418 [ 83.653701] x19: ffff0000099b11c8 x18: 0000000000000000 [ 83.658971] x17: 0000000000000000 x16: 0000000000000000 [ 83.664241] x15: 0000000000000000 x14: 0000000000000000 [ 83.669511] x13: 0000000000000000 x12: 0000000000000000 [ 83.674782] x11: 0000000000000000 x10: 0000000000000000 [ 83.680052] x9 : 0000000000000000 x8 : 0000000000000001 [ 83.685322] x7 : 0000000000010000 x6 : ffff800033ebab18 [ 83.690593] x5 : ffff800033ebab18 x4 : ffff800033e6c698 [ 83.695862] x3 : 0000000000000001 x2 : 0000000000000000 [ 83.701133] x1 : 0000000000000000 x0 : 0000000000000001 [ 83.706404] Call trace: [ 83.708830] coresight_disclaim_device_unlocked+0x44/0x80 [ 83.714180] coresight_disclaim_device+0x34/0x48 [ 83.718756] tmc_disable_etf_sink+0xc4/0xf0 [ 83.722902] coresight_disable_path_from+0xc8/0x240 [ 83.727735] coresight_disable_path+0x24/0x30 [ 83.732053] etm_event_stop+0x130/0x170 [ 83.735854] etm_event_del+0x24/0x30 [ 83.739399] event_sched_out.isra.51+0xcc/0x1e8 [ 83.743887] group_sched_out.part.53+0x44/0xb0 [ 83.748291] ctx_sched_out+0x298/0x2b8 [ 83.752005] task_ctx_sched_out+0x74/0xa8 [ 83.755980] perf_event_exit_task+0x140/0x418 [ 83.760298] do_exit+0x3f4/0xcf0 [ 83.763497] do_group_exit+0x5c/0xc0 [ 83.767041] __arm64_sys_exit_group+0x24/0x28 [ 83.771359] el0_svc_common+0x110/0x178 [ 83.775160] el0_svc_handler+0x94/0xe8 [ 83.778875] el0_svc+0x8/0xc [ 83.781728] ---[ end trace 02d8d8eac46db9e5 ]--- This patch is to fix this bug by using 'drvdata->base' as the register base address for CLAIM related operation. Fixes: `4d3ebd3658` ("coreisght: tmc: Claim device before use") Cc: Suzuki Poulose <suzuki.poulose@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Robert Walker <robert.walker@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2019-01-26 09:20:44 +01:00
arch	arm64: relocatable: fix inconsistencies in linker script and options	2019-01-26 09:20:44 +01:00
block	block: use rcu_work instead of call_rcu to avoid sleep in softirq	2019-01-22 21:09:57 +01:00
certs	export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()	2018-08-22 23:21:44 +09:00
crypto	crypto: ecc - regularize scalar for scalar multiplication	2019-01-26 09:20:41 +01:00
Documentation	x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off	2019-01-09 17:45:54 +01:00
drivers	coresight: tmc: Fix bad register address for CLAIM	2019-01-26 09:20:44 +01:00
firmware	kbuild: remove all dummy assignments to obj-	2017-11-18 11:46:06 +09:00
fs	pstore/ram: Do not treat empty buffers as valid	2019-01-26 09:20:43 +01:00
include	bpf: Allow narrow loads with offset > 0	2019-01-26 09:20:40 +01:00
init	kbuild: Disable LD_DEAD_CODE_DATA_ELIMINATION with ftrace & GCC <= 4.7	2019-01-22 21:09:54 +01:00
ipc	ipc: IPCMNI limit check for semmni	2018-10-31 08:54:14 -07:00
kernel	bpf: Allow narrow loads with offset > 0	2019-01-26 09:20:40 +01:00
lib	fix int_sqrt64() for very large numbers	2019-01-22 21:09:55 +01:00
LICENSES	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
mm	mm: page_mapped: don't assume compound page is huge or THP	2019-01-16 22:03:26 +01:00
net	netfilter: ipset: Allow matching on destination MAC address for mac and ipmac sets	2019-01-26 09:20:39 +01:00
samples	samples: bpf: fix: error handling regarding kprobe_events	2019-01-26 09:20:42 +01:00
scripts	kbuild: let fixdep directly write to .*.cmd files	2019-01-26 09:20:43 +01:00
security	selinux: always allow mounting submounts	2019-01-26 09:20:42 +01:00
sound	ASoC: use dma_ops of parent device for acp_audio_dma	2019-01-26 09:20:44 +01:00
tools	selftests/bpf: enable (uncomment) all tests in test_libbpf.sh	2019-01-26 09:20:40 +01:00
usr	initramfs: move gen_initramfs_list.sh from scripts/ to usr/	2018-08-22 23:21:44 +09:00
virt	KVM: arm/arm64: vgic: Fix off-by-one bug in vgic_get_irq()	2019-01-09 17:46:04 +01:00
.clang-format	page cache: Convert find_get_pages_contig to XArray	2018-10-21 10:46:34 -04:00
.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 updates for v4.17 (2nd)	2018-04-15 17:21:30 -07:00
.mailmap	mailmap: Update email for Punit Agrawal	2018-11-05 10:02:11 +00:00
COPYING	COPYING: use the new text with points to the license files	2018-03-23 12:41:45 -06:00
CREDITS	MAINTAINERS: update entry for MMP platform	2018-12-03 12:39:57 -08:00
Kbuild	Kbuild updates for v4.15	2017-11-17 17:45:29 -08:00
Kconfig	kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt	2018-08-02 08:06:55 +09:00
MAINTAINERS	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-21 14:21:17 -08:00
Makefile	kbuild: let fixdep directly write to .*.cmd files	2019-01-26 09:20:43 +01:00
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.