ARM: OMAP2+: clock: remove unused function prototype

Remove unused function prototype that was left by commit 149c09d3a61d
("ARM: AM33xx: remove old clock data and link in new clock init code")
which removed the definition.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: dts: DRA7: wdt: Fix compatible property for watchdog node

OMAP wdt driver supports only ti,omap3-wdt compatible. In DRA7 dt
wdt compatible property is defined as ti,omap4-wdt by mistake instead of
ti,omap3-wdt. Correcting the typo.

Fixes: 6e58b8f1daaf1a ("ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board")
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: dts: dra7: fix DSS PLL clock mux registers

The clock nodes for DSS VIDEO1/2 and HDMI have wrong register addresses.
This patch fixes the addresses so that they point to
CM_CLKSEL_VIDEO1_PLL_SYS, CM_CLKSEL_VIDEO2_PLL_SYS and
CM_CLKSEL_HDMI_PLL_SYS.

Reported-by: Somnath Mukherjee <somnath@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
HID: wacom: re-add accidentally dropped Lenovo PID

Dropped in the following commit:

commit a3e6f6543d19 ("Input: wacom - keep wacom_ids ordered")

Reported-by: Hans Spath <inbox-546@hans-spath.de>
CC: stable@vger.kernel.org    # v3.17+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
HID: wacom: fix freeze on open when autosuspend is on

Since the conversion from USB to HID (in v3.17), some people reported a
freeze on boot with the wacom driver. Hans managed to get a stacktrace:

[  240.272331] Call Trace:
[  240.272338]  [<ffffffff813de7b9>] ? usb_hcd_submit_urb+0xa9/0xb10
[  240.272347]  [<ffffffff81555579>] schedule+0x29/0x70
[  240.272355]  [<ffffffff815559e6>] schedule_preempt_disabled+0x16/0x20
[  240.272363]  [<ffffffff81557365>] __mutex_lock_slowpath+0xe5/0x230
[  240.272372]  [<ffffffff815574c7>] mutex_lock+0x17/0x30
[  240.272380]  [<ffffffffa063c1d2>] wacom_resume+0x22/0x50 [wacom]
[  240.272396]  [<ffffffffa01aea8a>] hid_resume_common+0xba/0x110 [usbhid]
[  240.272404]  [<ffffffff813e5890>] ? usb_runtime_suspend+0x80/0x80
[  240.272417]  [<ffffffffa01aeb1d>] hid_resume+0x3d/0x70 [usbhid]
[  240.272425]  [<ffffffff813e44a6>] usb_resume_interface.isra.6+0xb6/0x120
[  240.272432]  [<ffffffff813e4774>] usb_resume_both+0x74/0x140
[  240.272439]  [<ffffffff813e58aa>] usb_runtime_resume+0x1a/0x20
[  240.272446]  [<ffffffff813b1912>] __rpm_callback+0x32/0x70
[  240.272453]  [<ffffffff813b1976>] rpm_callback+0x26/0xa0
[  240.272460]  [<ffffffff813b2d71>] rpm_resume+0x4b1/0x690
[  240.272468]  [<ffffffff812ab992>] ? radix_tree_lookup_slot+0x22/0x50
[  240.272475]  [<ffffffff813b2c1a>] rpm_resume+0x35a/0x690
[  240.272482]  [<ffffffff8116e9c9>] ? zone_statistics+0x89/0xa0
[  240.272489]  [<ffffffff813b2f90>] __pm_runtime_resume+0x40/0x60
[  240.272497]  [<ffffffff813e4272>] usb_autopm_get_interface+0x22/0x60
[  240.272509]  [<ffffffffa01ae8d9>] usbhid_open+0x59/0xe0 [usbhid]
[  240.272517]  [<ffffffffa063ac85>] wacom_open+0x35/0x50 [wacom]
[  240.272525]  [<ffffffff813f37b9>] input_open_device+0x79/0xa0
[  240.272534]  [<ffffffffa048d1c1>] evdev_open+0x1b1/0x200 [evdev]
[  240.272543]  [<ffffffff811c899e>] chrdev_open+0xae/0x1f0
[  240.272549]  [<ffffffff811c88f0>] ? cdev_put+0x30/0x30
[  240.272556]  [<ffffffff811c17e2>] do_dentry_open+0x1d2/0x320
[  240.272562]  [<ffffffff811c1cd1>] finish_open+0x31/0x50
[  240.272571]  [<ffffffff811d2202>] do_last.isra.36+0x652/0xe50
[  240.272579]  [<ffffffff811d2ac7>] path_openat+0xc7/0x6f0
[  240.272586]  [<ffffffff811cf012>] ? final_putname+0x22/0x50
[  240.272594]  [<ffffffff811d42d2>] ? user_path_at_empty+0x72/0xd0
[  240.272602]  [<ffffffff811d43fd>] do_filp_open+0x4d/0xc0
[...]

So here, wacom_open is called, and then wacom_resume is called by the
PM system. However, wacom_open already took the lock when wacom_resume
tries to get it. Freeze.

A little bit of history shows that this already happened in the past
- commit f6cd378372bf ("Input: wacom - fix runtime PM related deadlock"),
and the solution was to call first the PM function before taking the lock.

The lock was introduced in commit commit e722409445fb ("Input: wacom -
implement suspend and autosuspend") when the autosuspend feature has
been added. Given that usbhid already takes care of this very same
locking between suspend/resume, I think we can simply kill the lock
in open/close.

The lock is now used also with LEDs, so we can not remove it completely.

Reported-by: Hans Spath <inbox-546@hans-spath.de>
Tested-by: Hans Spath <inbox-546@hans-spath.de>
CC: stable@vger.kernel.org # v3.17+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
clk: samsung: Spelling s/bwtween/between/

Fix a typo in comment section of "struct samsung_clk_provider".

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
clk: samsung: remove unnecessary CONFIG_OF from clk.c

Remove unnecessary CONFIG_OF from samsung/clk.c.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
clk: samsung: remove unnecessary inclusion of header files from clk.h

Let's remove unnecessary include of header files from clk.h and add
required one in clk.c

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
[s.nawrocki@samsung.com: dropped removal of '#include <linux/syscore_ops.h>']
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
clk: samsung: exynos4415: Fix build with PM_SLEEP disabled

Fix following build errors when PM_SLEEP is disabled (e.g. by disabling
SUSPEND and HIBERNATION):

drivers/clk/samsung/clk-exynos4415.c: In function ‘exynos4415_cmu_init’:
drivers/clk/samsung/clk-exynos4415.c:982:2: error: ‘exynos4415_ctx’ undeclared (first use in this function)
drivers/clk/samsung/clk-exynos4415.c:982:2: note: each undeclared identifier is reported only once for each function it appears in
drivers/clk/samsung/clk-exynos4415.c: In function ‘exynos4415_cmu_dmc_init’:
drivers/clk/samsung/clk-exynos4415.c:1123:2: error: ‘exynos4415_dmc_ctx’ undeclared (first use in this function)
make[3]: *** [drivers/clk/samsung/clk-exynos4415.o] Error 1

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
clk: samsung: exynos4: set parent of sclk_hdmiphy to hdmi

sclk_hdmiphy clock is generated by HDMI-PHY and depends on hdmi gate clock.
The patch models this dependency using parent/child hirerarchy.

The patch fixes issue with system hangs during mixer device access, mixer uses
sclk_hdmiphy descendant clock.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
clk: samsung: Fix double add of syscore ops after driver rebind

During driver unbind the syscore ops were not unregistered which lead to
double add on syscore list:

$ echo "3810000.audss-clock-controller" > /sys/bus/platform/drivers/exynos-audss-clk/unbind
$ echo "3810000.audss-clock-controller" > /sys/bus/platform/drivers/exynos-audss-clk/bind
[ 1463.044061] ------------[ cut here ]------------
[ 1463.047255] WARNING: CPU: 0 PID: 1 at lib/list_debug.c:36 __list_add+0x8c/0xc0()
[ 1463.054613] list_add double add: new=c06e52c0, prev=c06e52c0, next=c06d5f84.
[ 1463.061625] Modules linked in:
[ 1463.064623] CPU: 0 PID: 1 Comm: bash Tainted: G        W      3.18.0-rc5-next-20141121-00005-ga8fab06eab42-dirty #1022
[ 1463.075338] [<c0014e2c>] (unwind_backtrace) from [<c0011d80>] (show_stack+0x10/0x14)
[ 1463.083046] [<c0011d80>] (show_stack) from [<c048bb70>] (dump_stack+0x70/0xbc)
[ 1463.090236] [<c048bb70>] (dump_stack) from [<c00233d4>] (warn_slowpath_common+0x74/0xb0)
[ 1463.098295] [<c00233d4>] (warn_slowpath_common) from [<c00234a4>] (warn_slowpath_fmt+0x30/0x40)
[ 1463.106962] [<c00234a4>] (warn_slowpath_fmt) from [<c020fe80>] (__list_add+0x8c/0xc0)
[ 1463.114760] [<c020fe80>] (__list_add) from [<c0282094>] (register_syscore_ops+0x30/0x3c)
[ 1463.122819] [<c0282094>] (register_syscore_ops) from [<c0392f20>] (exynos_audss_clk_probe+0x36c/0x460)
[ 1463.132091] [<c0392f20>] (exynos_audss_clk_probe) from [<c0283084>] (platform_drv_probe+0x48/0xa4)
[ 1463.141013] [<c0283084>] (platform_drv_probe) from [<c0281a14>] (driver_probe_device+0x13c/0x37c)
[ 1463.149852] [<c0281a14>] (driver_probe_device) from [<c0280560>] (bind_store+0x90/0xe0)
[ 1463.157822] [<c0280560>] (bind_store) from [<c027fd10>] (drv_attr_store+0x20/0x2c)
[ 1463.165363] [<c027fd10>] (drv_attr_store) from [<c0143898>] (sysfs_kf_write+0x4c/0x50)
[ 1463.173252] [<c0143898>] (sysfs_kf_write) from [<c0142c80>] (kernfs_fop_write+0xbc/0x198)
[ 1463.181395] [<c0142c80>] (kernfs_fop_write) from [<c00e2be0>] (vfs_write+0xa0/0x1a8)
[ 1463.189104] [<c00e2be0>] (vfs_write) from [<c00e2f00>] (SyS_write+0x40/0x8c)
[ 1463.196122] [<c00e2f00>] (SyS_write) from [<c000f2a0>] (ret_fast_syscall+0x0/0x48)
[ 1463.203655] ---[ end trace 08f6710c9bc8d8f3 ]---
[ 1463.208244] exynos-audss-clk 3810000.audss-clock-controller: setup completed

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: 1241ef94ccc3 ("clk: samsung: register audio subsystem clocks using common clock framework")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
gpio: mcp23s08: Add option to configure IRQ output polarity as active high

Default is active low, but if property is specified in DT set INTPOL flag.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
gpio: pl061: hook request if gpio-ranges avaiable

Gpio-ranges property is useful to represent which GPIOs correspond
to which pins on which pin controllers. But there may be some gpios
without pinctrl operation. So check whether gpio-ranges property
exists in device node first.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
gpio: pl061: document gpio-ranges property for bindings file

Document gpio-ranges property in pl061-gpio.txt

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
SFI: fix compiler warnings

drivers/sfi/sfi_core.c:164:26: warning: no previous prototype for ‘sfi_map_table’ [-Wmissing-prototypes]
drivers/sfi/sfi_core.c:192:6: warning: no previous prototype for ‘sfi_unmap_table’ [-Wmissing-prototypes]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
xen: introduce helper functions to do safe read and write accesses

Introduce two helper functions to safely read and write unsigned long
values from or to memory when the access may fault because the mapping
is non-present or read-only.

These helpers can be used instead of open coded uses of __get_user()
and __put_user() avoiding the need to do casts to fix sparse warnings.

Use the helpers in page.h and p2m.c. This will fix the sparse
warnings when doing "make C=1".

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
xen: annotate xen_set_identity_and_remap_chunk() with __init

Commit 5b8e7d80542487ff1bf17b4cf2922a01dee13d3a removed the __init
annotation from xen_set_identity_and_remap_chunk(). Add it again.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
ASoC: atmel_ssc_dai/trivial: typo fix

Signed-off-by: Matthieu Crapet <mcrapet@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
xtensa: add power management menu to Kconfig

This allows using runtime power management feature on Xtensa.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: fix kmap_prot definition

Replace PAGE_KERNEL with PAGE_KERNEL_EXEC to allow copy_to_user_page
invalidate icache for pages mapped with kmap.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>