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Commit Graph

455641 Commits

Author SHA1 Message Date
Pratyush Anand
22a6923043 ARM: SPEAr13xx: Fix pcie clock name
Follow dt clock naming convention for PCIe clocks.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[viresh: fixed logs/cclist]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-11 06:50:16 -07:00
Mike Turquette
0c4565de5f tegra clk updates for 3.17 including PLLE fixes for xusb
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Merge tag 'tegra-clk-3.17-1' of git://nv-tegra.nvidia.com/user/pdeschrijver/linux into clk-next-tegra

tegra clk updates for 3.17 including PLLE fixes for xusb
2014-07-08 05:34:22 -07:00
Mikko Perttunen
0e548d50b9 clk: tegra: Use XUSB-compatible SATA PLL sequence
Use a sequence for enabling hardware control of the SATA PLL
that works both when using the SATA lane with SATA and when
using it with XUSB.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
2014-07-08 11:29:55 +03:00
Mike Turquette
cdae1730d0 Merge branch 'clk-fixes' into clk-next 2014-07-03 11:55:42 -07:00
Stephen Boyd
c556bcddc7 clk: qcom: HDMI source sel is 3 not 2
The HDMI PLL input to the tv mux is supposed to be 3, not 2. Fix
the code so that we can properly select the HDMI PLL.

Fixes: 6d00b56fe "clk: qcom: Add support for MSM8960's multimedia clock controller (MMCC)"
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-02 16:33:18 -07:00
Peter De Schrijver
fb2b3c9f68 clk: define and export clk_debugs_add_file
Define and export a new function clk_debugs_add_file which adds a file
to a existing clock's debugfs directory. This can be used by clock
providers to add debugfs entries which are not related to a specific clock
type. Examples include the ability to measure the rate of a clock. It can
also be used by modules to create new debugfs entries. This is useful if you
want to expose features for testing which can potentially cause system
instability such as allowing to change a clock's rate from userspace.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-02 16:15:55 -07:00
Mike Turquette
4924b8a2fa Samsung clock fixes for v3.16.
This pull request contains fixes for various issues found while testing
 -rc versions of Linux 3.16. Mostly two kinds of patches:
 
 * Fixes of incorrectly defined clocks
 
 1) a37c82a clk: samsung: exynos4: Remove SRC_MASK_ISP gates
 
     Issue present since v3.10.
 
 2) 0b1643b clk/exynos5250: fix bit number for tv sysmmu clock
 
     Issue present since v3.16.
 
 3) 44ff025 clk: exynos5420: Remove aclk66_peric from the clock tree description
 
     Issue present since v3.11.
 
 * Adding things missed by original patches
 
 1) cec1cde clk: samsung: fix several typos to fix boot on s3c2410
 2) 34ece9e clk: samsung: add more aliases for s3c24xx
 
     Both issues present since the driver was added in v3.16.
 
 3) a92dda4 clk: s3c64xx: Hookup SPI clocks correctly
 
     Issue present since v3.12.
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Merge tag 'for_3.16/samsung-clk-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tfiga/samsung-clk into clk-fixes-samsung

Samsung clock fixes for v3.16.

This pull request contains fixes for various issues found while testing
-rc versions of Linux 3.16. Mostly two kinds of patches:

* Fixes of incorrectly defined clocks

1) a37c82a clk: samsung: exynos4: Remove SRC_MASK_ISP gates

    Issue present since v3.10.

2) 0b1643b clk/exynos5250: fix bit number for tv sysmmu clock

    Issue present since v3.16.

3) 44ff025 clk: exynos5420: Remove aclk66_peric from the clock tree description

    Issue present since v3.11.

* Adding things missed by original patches

1) cec1cde clk: samsung: fix several typos to fix boot on s3c2410
2) 34ece9e clk: samsung: add more aliases for s3c24xx

    Both issues present since the driver was added in v3.16.

3) a92dda4 clk: s3c64xx: Hookup SPI clocks correctly

    Issue present since v3.12.
2014-07-02 10:05:56 -07:00
Karol Wrona
89ed7e6e68 clk: s2mps11: Fix clk_ops
s2mps11 clocks had registered callbacks for prepare ,unprepare and is_enabled.
During disabling unused clocks the lack of is_prepared caused that unused
s2mps11 clocks were not unprepared and stayed active.

Regmap_read is cached so it can be called in is_prepare callback
to achieve this information. Enabled field was removed from struct s2mps11_clk.

Signed-off-by: Karol Wrona <k.wrona@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-02 09:44:47 -07:00
Alexandre Belloni
4da66b631f clk: at91: main: warn when the main crystal frequency is not set
When the main crystal frequency is not set, the main clock is approximated using
the MAINF value in the CKGR_MCFR register. Warn the user in that case.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@overkiz.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-02 09:00:52 -07:00
Mike Turquette
5c726dcdd2 Merge branch 'for-v3.16-rc/ti-clk-drv' of github.com:t-kristo/linux-pm into clk-fixes-ti 2014-07-01 23:41:56 -07:00
Himangi Saraogi
c3dcac875e clk: sunxi: fix devm_ioremap_resource error detection code
devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure.

A simplified version of the semantic match that finds this problem is as
follows:

// <smpl>
@@
expression e,e1;
statement S;
@@

*e = devm_ioremap_resource(...);
if (!e1) S

// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 23:37:34 -07:00
Krzysztof Kozlowski
2a96dfa49c clk: s2mps11: Fix double free corruption during driver unbind
After unbinding the driver memory was corrupted by double free of
clk_lookup structure. This lead to OOPS when re-binding the driver
again.

The driver allocated memory for 'clk_lookup' with devm_kzalloc. During
driver removal this memory was freed twice: once by clkdev_drop() and
second by devm code.

Kernel panic log:
[   30.839284] Unable to handle kernel paging request at virtual address 5f343173
[   30.846476] pgd = dee14000
[   30.849165] [5f343173] *pgd=00000000
[   30.852703] Internal error: Oops: 805 [#1] PREEMPT SMP ARM
[   30.858166] Modules linked in:
[   30.861208] CPU: 0 PID: 1 Comm: bash Not tainted 3.16.0-rc2-00239-g94bdf617b07e-dirty #40
[   30.869364] task: df478000 ti: df480000 task.ti: df480000
[   30.874752] PC is at clkdev_add+0x2c/0x38
[   30.878738] LR is at clkdev_add+0x18/0x38
[   30.882732] pc : [<c0350908>]    lr : [<c03508f4>]    psr: 60000013
[   30.882732] sp : df481e78  ip : 00000001  fp : c0700ed8
[   30.894187] r10: 0000000c  r9 : 00000000  r8 : c07b0e3c
[   30.899396] r7 : 00000002  r6 : df45f9d0  r5 : df421390  r4 : c0700d6c
[   30.905906] r3 : 5f343173  r2 : c0700d84  r1 : 60000013  r0 : c0700d6c
[   30.912417] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[   30.919534] Control: 10c53c7d  Table: 5ee1406a  DAC: 00000015
[   30.925262] Process bash (pid: 1, stack limit = 0xdf480240)
[   30.930817] Stack: (0xdf481e78 to 0xdf482000)
[   30.935159] 1e60:                                                       00001000 df6de610
[   30.943321] 1e80: df7f4558 c0355650 c05ec6ec c0700eb0 df6de600 df7f4510 dec9d69c 00000014
[   30.951480] 1ea0: 00167b48 df6de610 c0700e30 c0713518 00000000 c0700e30 dec9d69c 00000006
[   30.959639] 1ec0: 00167b48 c02c1b7c c02c1b64 df6de610 c07aff48 c02c0420 c06fb150 c047cc20
[   30.967798] 1ee0: df6de610 df6de610 c0700e30 df6de644 c06fb150 0000000c dec9d690 c02bef90
[   30.975957] 1f00: dec9c6c0 dece4c00 df481f80 dece4c00 0000000c c02be73c 0000000c c016ca8c
[   30.984116] 1f20: c016ca48 00000000 00000000 c016c1f4 00000000 00000000 b6f18000 df481f80
[   30.992276] 1f40: df7f66c0 0000000c df480000 df480000 b6f18000 c011094c df47839c 60000013
[   31.000435] 1f60: 00000000 00000000 df7f66c0 df7f66c0 0000000c df480000 b6f18000 c0110dd4
[   31.008594] 1f80: 00000000 00000000 0000000c b6ec05d8 0000000c b6f18000 00000004 c000f2a8
[   31.016753] 1fa0: 00001000 c000f0e0 b6ec05d8 0000000c 00000001 b6f18000 0000000c 00000000
[   31.024912] 1fc0: b6ec05d8 0000000c b6f18000 00000004 0000000c 00000001 00000000 00167b48
[   31.033071] 1fe0: 00000000 bed83a80 b6e004f0 b6e5122c 60000010 00000001 ffffffff ffffffff
[   31.041248] [<c0350908>] (clkdev_add) from [<c0355650>] (s2mps11_clk_probe+0x2b4/0x3b4)
[   31.049223] [<c0355650>] (s2mps11_clk_probe) from [<c02c1b7c>] (platform_drv_probe+0x18/0x48)
[   31.057728] [<c02c1b7c>] (platform_drv_probe) from [<c02c0420>] (driver_probe_device+0x13c/0x384)
[   31.066579] [<c02c0420>] (driver_probe_device) from [<c02bef90>] (bind_store+0x88/0xd8)
[   31.074564] [<c02bef90>] (bind_store) from [<c02be73c>] (drv_attr_store+0x20/0x2c)
[   31.082118] [<c02be73c>] (drv_attr_store) from [<c016ca8c>] (sysfs_kf_write+0x44/0x48)
[   31.090016] [<c016ca8c>] (sysfs_kf_write) from [<c016c1f4>] (kernfs_fop_write+0xc0/0x17c)
[   31.098176] [<c016c1f4>] (kernfs_fop_write) from [<c011094c>] (vfs_write+0xa0/0x1c4)
[   31.105899] [<c011094c>] (vfs_write) from [<c0110dd4>] (SyS_write+0x40/0x8c)
[   31.112931] [<c0110dd4>] (SyS_write) from [<c000f0e0>] (ret_fast_syscall+0x0/0x3c)
[   31.120481] Code: e2842018 e584501c e1a00004 e885000c (e5835000)
[   31.126596] ---[ end trace efad45bfa3a61b05 ]---
[   31.131181] Kernel panic - not syncing: Fatal exception
[   31.136368] CPU1: stopping
[   31.139054] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D       3.16.0-rc2-00239-g94bdf617b07e-dirty #40
[   31.148697] [<c0016480>] (unwind_backtrace) from [<c0012950>] (show_stack+0x10/0x14)
[   31.156419] [<c0012950>] (show_stack) from [<c0480db8>] (dump_stack+0x80/0xcc)
[   31.163622] [<c0480db8>] (dump_stack) from [<c001499c>] (handle_IPI+0x130/0x15c)
[   31.170998] [<c001499c>] (handle_IPI) from [<c000862c>] (gic_handle_irq+0x60/0x68)
[   31.178549] [<c000862c>] (gic_handle_irq) from [<c0013480>] (__irq_svc+0x40/0x70)
[   31.186009] Exception stack(0xdf4bdf88 to 0xdf4bdfd0)
[   31.191046] df80:                   ffffffed 00000000 00000000 00000000 df4bc000 c06d042c
[   31.199207] dfa0: 00000000 ffffffed c06d03c0 00000000 c070c288 00000000 00000000 df4bdfd0
[   31.207363] dfc0: c0010324 c0010328 60000013 ffffffff
[   31.212402] [<c0013480>] (__irq_svc) from [<c0010328>] (arch_cpu_idle+0x28/0x30)
[   31.219783] [<c0010328>] (arch_cpu_idle) from [<c005f150>] (cpu_startup_entry+0x2c4/0x3f0)
[   31.228027] [<c005f150>] (cpu_startup_entry) from [<400086c4>] (0x400086c4)
[   31.234968] ---[ end Kernel panic - not syncing: Fatal exception

Fixes: 7cc560dea4 ("clk: s2mps11: Add support for s2mps11")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 21:56:49 -07:00
Peter Ujfalusi
942d1d6749 clk: Add driver for Palmas clk32kg and clk32kgaudio clocks
Palmas class of devices can provide 32K clock(s) to be used by other devices
on the board. Depending on the actual device the provided clocks can be:
CLK32K_KG and CLK32K_KGAUDIO
or only one:
CLK32K_KG (TPS659039 for example)

Use separate compatible flags for the two 32K clock.
A system which needs or have only one of the 32k clock from
Palmas will need to add node(s) for each clock as separate section
in the dts file.
The two compatible property is:
"ti,palmas-clk32kg" for clk32kg clock
"ti,palmas-clk32kgaudio" for clk32kgaudio clock

Apart from the register control of the clocks - which is done via
the clock API there is a posibility to enable the external sleep
control. In this way the clock can be enabled/disabled on demand by the
user of the clock.

See the documentation for more details.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 21:37:57 -07:00
Peter Ujfalusi
5974b794cb dt/bindings: Binding documentation for Palmas clk32kg and clk32kgaudio clocks
Palmas class of devices can provide 32K clock(s) to be used by other devices
on the board. Depending on the actual device the provided clocks can be:
CLK32K_KG and CLK32K_KGAUDIO
or only one:
CLK32K_KG (TPS659039 for example)

Use separate compatible flags for the two 32K clock.
A system which needs or have only one of the 32k clock from
Palmas will need to add node(s) for each clock as separate section
in the dts file.
The two compatible property is:
"ti,palmas-clk32kg" for clk32kg clock
"ti,palmas-clk32kgaudio" for clk32kgaudio clock

Apart from the register control of the clocks - which is done via
the clock API there is a posibility to enable the external sleep
control. In this way the clock can be enabled/disabled on demand by the
user of the clock.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 21:37:57 -07:00
Roger Quadros
4332ec1a99 clk: ti: am43x: Fix boot with CONFIG_SOC_AM33XX disabled
Define ti_clk_register_dpll_x2() and of_ti_am3_dpll_x2_setup() if
AM43XX is defined.

Fixes the below boot issue.

[    2.157258] gpmc_l3_clk not enabled
[    2.161194] gpmc_l3_clk not enabled
[    2.164896] Division by zero in kernel.
[    2.169055] CPU: 0 PID: 321 Comm: kworker/u2:2 Tainted: G        W     3.16.0-rc1-00008-g4c0e520 #273
[    2.178880] Workqueue: deferwq deferred_probe_work_func
[    2.184459] [<c001477c>] (unwind_backtrace) from [<c001187c>] (show_stack+0x10/0x14)
[    2.192752] [<c001187c>] (show_stack) from [<c0530f28>] (dump_stack+0x80/0x9c)
[    2.200486] [<c0530f28>] (dump_stack) from [<c02c867c>] (Ldiv0+0x8/0x10)
[    2.207678] [<c02c867c>] (Ldiv0) from [<c0022da0>] (gpmc_calc_divider+0x24/0x40)
[    2.215490] [<c0022da0>] (gpmc_calc_divider) from [<c0022e20>] (gpmc_cs_set_timings+0x18/0x474)
[    2.224783] [<c0022e20>] (gpmc_cs_set_timings) from [<c003069c>] (gpmc_nand_init+0x74/0x1a8)
[    2.233791] [<c003069c>] (gpmc_nand_init) from [<c0024668>] (gpmc_probe+0x52c/0x874)
[    2.242089] [<c0024668>] (gpmc_probe) from [<c0349218>] (platform_drv_probe+0x18/0x48)
[    2.250534] [<c0349218>] (platform_drv_probe) from [<c0347d88>] (driver_probe_device+0x104/0x22c)
[    2.259988] [<c0347d88>] (driver_probe_device) from [<c03464dc>] (bus_for_each_drv+0x44/0x8c)
[    2.269087] [<c03464dc>] (bus_for_each_drv) from [<c0347c4c>] (device_attach+0x74/0x8c)
[    2.277620] [<c0347c4c>] (device_attach) from [<c0347380>] (bus_probe_device+0x88/0xb0)
[    2.286074] [<c0347380>] (bus_probe_device) from [<c0347768>] (deferred_probe_work_func+0x60/0x90)
[    2.295611] [<c0347768>] (deferred_probe_work_func) from [<c004ef50>] (process_one_work+0x1b4/0x4bc)
[    2.305288] [<c004ef50>] (process_one_work) from [<c004f3d4>] (worker_thread+0x148/0x550)
[    2.313954] [<c004f3d4>] (worker_thread) from [<c0055a48>] (kthread+0xc8/0xe4)
[    2.321628] [<c0055a48>] (kthread) from [<c000e648>] (ret_from_fork+0x14/0x2c)

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 20:34:37 -07:00
Sachin Kamat
6b44c854b0 clk: Fix build warnings
‘all_lists’ and ‘orphan_list’ is accessed only when DEBUG_FS is defined.
Thus, make their compilation conditional to fix the below warnings introduced
by commit 27b8d5f723 ("clk: flatten clk tree in debugfs"):
drivers/clk/clk.c:40:27: warning: ‘all_lists’ defined but not used [-Wunused-variable]
drivers/clk/clk.c:46:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable]

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 20:20:36 -07:00
Jingchang Lu
da788acb28 clk: ppc-corenet: Fix Section mismatch warning
WARNING: drivers/built-in.o(.data+0x10258):
Section mismatch in reference from the variable ppc_corenet_clk_driver
to the (unknown reference) .init.rodata:(unknown)
The variable ppc_corenet_clk_driver references
the (unknown reference) __initconst (unknown)
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-07-01 20:11:22 -07:00
Mike Turquette
a12cc0b933 Merge remote-tracking branch 'linaro/clk-next' into clk-next 2014-07-01 19:59:52 -07:00
Peter De Schrijver
9f0030c8ad clk: tegra: export clock names for debugging
When writing a module for testing or debugging purposes, there is no way to
get hold of clk handles. This patch solves this by exposing all valid clocks
as clkdev's for the virtual device tegra-clk-debug.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2014-06-30 16:51:45 +03:00
Doug Anderson
44ff0254b8 clk: exynos5420: Remove aclk66_peric from the clock tree description
The "aclk66_peric" clock is a gate clock with a whole bunch of gates
underneath it.  This big gate isn't very useful to include in our
clock tree.  If any of the children need to be turned on then the big
gate will need to be on anyway.  ...and there are plenty of other "big
gates" that aren't described in our clock tree, some of which shut off
collections of clocks that have no relationship in the hierarchy so
are hard to model.

"aclk66_peric" is causing earlyprintk problems since it gets disabled
as part of the boot process, so let's just remove it.

Strangely (and for no good reason) this clock is exported as part of
the common clock bindings.  Remove it since there are no in-kernel
device trees using it and no reason anyone out of tree should refer to
it either.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 14:47:33 +02:00
Rahul Sharma
0b1643b39d clk/exynos5250: fix bit number for tv sysmmu clock
Change bit from 2 to 9 for tv (mixer) sysmmu clock.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 14:46:36 +02:00
Charles Keepax
a92dda4bfa clk: s3c64xx: Hookup SPI clocks correctly
In the move to this clock driver the hookups for the SPI clocks were
dropped, which causes my system Cragganmore (s3c6410 based) to be unable
to locate any spibus clocks. This patch adds them back in.

When taking the clock from the epll clock (SCLK) the rates on the SPI
bus are incorrect, this needs further debugging but the hookup here
should be correct and the problem should be else where.

The USBCLK case has been dropped because this requires the USB PHY to be
enabled.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 14:46:26 +02:00
Tomasz Figa
a37c82a3b3 clk: samsung: exynos4: Remove SRC_MASK_ISP gates
ISP special clocks have dedicated gating registers and so MUX SRC_MASK
register should not be used. This patch fixes the problem of
Exynos4x12-based boards freezing on system suspend, because those
mux outputs need not to be masked while suspending.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Cc: Mike Turquette <mturquette@linaro.org>
2014-06-30 14:46:03 +02:00
Vasily Khoruzhick
34ece9e610 clk: samsung: add more aliases for s3c24xx
Without these aliases clock lookup fails in s3c2410fb,
s3cmci, s3c2410-nand, s3c24xx-i2s, and i2c-s3c2410 drivers.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 14:45:56 +02:00
Vasily Khoruzhick
cec1cdea6f clk: samsung: fix several typos to fix boot on s3c2410
There's a several typos in a driver: 2410 instead of S3C2410
and wrong argument to ARRAY_SIZE(). They prevent s3c2410
from properly booting.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-06-30 14:44:16 +02:00
Linus Torvalds
4c834452aa Linux 3.16-rc3 2014-06-29 14:11:36 -07:00
Linus Torvalds
ef2e0391e5 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "Another round of ARM fixes.  The largest change here is the L2 changes
  to work around problems for the Armada 37x/380 devices, where most of
  the size comes down to comments rather than code.

  The other significant fix here is for the ptrace code, to ensure that
  rewritten syscalls work as intended.  This was pointed out by Kees
  Cook, but Will Deacon reworked the patch to be more elegant.

  The remainder are fairly trivial changes"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8087/1: ptrace: reload syscall number after secure_computing() check
  ARM: 8086/1: Set memblock limit for nommu
  ARM: 8085/1: sa1100: collie: add top boot mtd partition
  ARM: 8084/1: sa1100: collie: revert back to cfi_probe
  ARM: 8080/1: mcpm.h: remove unused variable declaration
  ARM: 8076/1: mm: add support for HW coherent systems in PL310 cache
2014-06-29 13:40:08 -07:00
Randy Dunlap
97be078b87 MAINTAINERS: exceptions for Documentation maintainer
Note that I don't maintain Documentation/ABI/,
Documentation/devicetree/, or the language translation files.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-29 13:38:33 -07:00
Dan Carpenter
7d19e91b52 Documentation: add section about git to email-clients.txt
These days most people use git to send patches so I have added a section
about that.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-29 13:38:33 -07:00
Will Deacon
42309ab450 ARM: 8087/1: ptrace: reload syscall number after secure_computing() check
On the syscall tracing path, we call out to secure_computing() to allow
seccomp to check the syscall number being attempted. As part of this, a
SIGTRAP may be sent to the tracer and the syscall could be re-written by
a subsequent SET_SYSCALL ptrace request. Unfortunately, this new syscall
is ignored by the current code unless TIF_SYSCALL_TRACE is also set on
the current thread.

This patch slightly reworks the enter path of the syscall tracing code
so that we always reload the syscall number from
current_thread_info()->syscall after the potential ptrace traps.

Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:35 +01:00
Laura Abbott
6980c3e251 ARM: 8086/1: Set memblock limit for nommu
Commit 1c2f87c (ARM: 8025/1: Get rid of meminfo) changed find_limits
to use memblock_get_current_limit for calculating the max_low pfn.
nommu targets never actually set a limit on memblock though which
means memblock_get_current_limit will just return the default
value. Set the memblock_limit to be the end of DDR to make sure
bounds are calculated correctly.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:34 +01:00
Andrea Adami
3abe742339 ARM: 8085/1: sa1100: collie: add top boot mtd partition
The CFI mapping is now perfect so we can expose the top block, read only.
There isn't much to read, though, just the sharpsl_params values.

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:34 +01:00
Andrea Adami
92183103d8 ARM: 8084/1: sa1100: collie: revert back to cfi_probe
Reverts commit d26b17edaf
ARM: sa1100: collie.c: fall back to jedec_probe flash detection

Unfortunately the detection was challenged on the defective unit used for tests:
one of the NOR chips did not respond to the CFI query.
Moreover that bad device needed extra delays on erase-suspend/resume cycles.

Tested personally on 3 different units and with feedback of two other users.

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:33 +01:00
Nicolas Pitre
d0ba7cc02c ARM: 8080/1: mcpm.h: remove unused variable declaration
The sync_phys variable has been replaced by link time computation in
mcpm_head.S before the code was submitted upstream.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:32 +01:00
Thomas Petazzoni
98ea2dba65 ARM: 8076/1: mm: add support for HW coherent systems in PL310 cache
When a PL310 cache is used on a system that provides hardware
coherency, the outer cache sync operation is useless, and can be
skipped. Moreover, on some systems, it is harmful as it causes
deadlocks between the Marvell coherency mechanism, the Marvell PCIe
controller and the Cortex-A9.

To avoid this, this commit introduces a new Device Tree property
'arm,io-coherent' for the L2 cache controller node, valid only for the
PL310 cache. It identifies the usage of the PL310 cache in an I/O
coherent configuration. Internally, it makes the driver disable the
outer cache sync operation.

Note that technically speaking, a fully coherent system wouldn't
require any of the other .outer_cache operations. However, in
practice, when booting secondary CPUs, these are not yet coherent, and
therefore a set of cache maintenance operations are necessary at this
point. This explains why we keep the other .outer_cache operations and
only ->sync is disabled.

While in theory any write to a PL310 register could cause the
deadlock, in practice, disabling ->sync is sufficient to workaround
the deadlock, since the other cache maintenance operations are only
used in very specific situations.

Contrary to previous versions of this patch, this new version does not
simply NULL-ify the ->sync member, because the l2c_init_data
structures are now 'const' and therefore cannot be modified, which is
a good thing. Therefore, this patch introduces a separate
l2c_init_data instance, called of_l2c310_coherent_data.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:26:37 +01:00
Linus Torvalds
24b414d5a7 spi: Fixes for v3.16
A few driver specific fixes, the biggest one being a fix for the newly
 added Qualcomm SPI controller driver to make it not use its internal
 chip select due to hardware bugs, replacing it with GPIOs.
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Merge tag 'spi-v3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A few driver specific fixes, the biggest one being a fix for the newly
  added Qualcomm SPI controller driver to make it not use its internal
  chip select due to hardware bugs, replacing it with GPIOs"

* tag 'spi-v3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: qup: Remove chip select function
  spi: qup: Fix order of spi_register_master
  spi: sh-sci: fix use-after-free in sh_sci_spi_remove()
  spi/pxa2xx: fix incorrect SW mode chipselect setting for BayTrail LPSS SPI
2014-06-28 11:32:32 -07:00
Linus Torvalds
4194976b09 regulator: Fixes for v3.16
Several driver specific fixes here, the palmas fixes being especially
 important for a range of boards - the recent updates to support new
 devices have introduced several regressions.
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Merge tag 'regulator-v3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "Several driver specific fixes here, the palmas fixes being especially
  important for a range of boards - the recent updates to support new
  devices have introduced several regressions"

* tag 'regulator-v3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: tps65218: Correct the the config register for LDO1
  regulator: tps65218: Add the missing of_node assignment in probe
  regulator: palmas: fix typo in enable_reg calculation
  regulator: bcm590xx: fix vbus name
  regulator: palmas: Fix SMPS enable/disable/is_enabled
2014-06-28 11:31:58 -07:00
Linus Torvalds
eb477e03fe Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "Mostly minor fixes this time around.  The highlights include:

   - iscsi-target CHAP authentication fixes to enforce explicit key
     values (Tejas Vaykole + rahul.rane)
   - fix a long-standing OOPs in target-core when a alua configfs
     attribute is accessed after port symlink has been removed.
     (Sebastian Herbszt)
   - fix a v3.10.y iscsi-target regression causing the login reject
     status class/detail to be ignored (Christoph Vu-Brugier)
   - fix a v3.10.y iscsi-target regression to avoid rejecting an
     existing ITT during Data-Out when data-direction is wrong (Santosh
     Kulkarni + Arshad Hussain)
   - fix a iscsi-target related shutdown deadlock on UP kernels (Mikulas
     Patocka)
   - fix a v3.16-rc1 build issue with vhost-scsi + !CONFIG_NET (MST)"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  iscsi-target: fix iscsit_del_np deadlock on unload
  iovec: move memcpy_from/toiovecend to lib/iovec.c
  iscsi-target: Avoid rejecting incorrect ITT for Data-Out
  tcm_loop: Fix memory leak in tcm_loop_submission_work error path
  iscsi-target: Explicily clear login response PDU in exception path
  target: Fix left-over se_lun->lun_sep pointer OOPs
  iscsi-target; Enforce 1024 byte maximum for CHAP_C key value
  iscsi-target: Convert chap_server_compute_md5 to use kstrtoul
2014-06-28 09:43:58 -07:00
Mark Brown
7216a41839 Merge remote-tracking branches 'spi/fix/pxa2xx', 'spi/fix/qup' and 'spi/fix/sh-sci' into spi-linus 2014-06-28 14:01:23 +01:00
Mark Brown
11767484b8 Merge remote-tracking branches 'regulator/fix/bcm590xx', 'regulator/fix/palmas' and 'regulator/fix/tps65218' into regulator-linus 2014-06-28 14:01:04 +01:00
Mikulas Patocka
81a9c5e72b iscsi-target: fix iscsit_del_np deadlock on unload
On uniprocessor preemptible kernel, target core deadlocks on unload. The
following events happen:
* iscsit_del_np is called
* it calls send_sig(SIGINT, np->np_thread, 1);
* the scheduler switches to the np_thread
* the np_thread is woken up, it sees that kthread_should_stop() returns
  false, so it doesn't terminate
* the np_thread clears signals with flush_signals(current); and goes back
  to sleep in iscsit_accept_np
* the scheduler switches back to iscsit_del_np
* iscsit_del_np calls kthread_stop(np->np_thread);
* the np_thread is waiting in iscsit_accept_np and it doesn't respond to
  kthread_stop

The deadlock could be resolved if the administrator sends SIGINT signal to
the np_thread with killall -INT iscsi_np

The reproducible deadlock was introduced in commit
db6077fd0b, but the thread-stopping code was
racy even before.

This patch fixes the problem. Using kthread_should_stop to stop the
np_thread is unreliable, so we test np_thread_state instead. If
np_thread_state equals ISCSI_NP_THREAD_SHUTDOWN, the thread exits.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-06-27 23:23:35 -07:00
Linus Torvalds
3e7b256cba IOMMU Fixes for Linux v3.16-rc1
* Fix VT-d regression with handling multiple RMRR entries per
 	  device
 	* Fix a small race that was left in the mmu_notifier handling in
 	  the AMD IOMMUv2 driver
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Merge tag 'iommu-fixes-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:

 - fix VT-d regression with handling multiple RMRR entries per device

 - fix a small race that was left in the mmu_notifier handling in the
   AMD IOMMUv2 driver

* tag 'iommu-fixes-v3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix small race between invalidate_range_end/start
  iommu/vt-d: fix bug in handling multiple RMRRs for the same PCI device
2014-06-27 19:00:45 -07:00
Linus Torvalds
d1fc98ba96 Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
 "A pile of fixes related to the VDSO, EFI and 32-bit badsys handling.

  It turns out that removing the section headers from the VDSO breaks
  gdb, so this puts back most of them.  A very simple typo broke
  rt_sigreturn on some versions of glibc, with obviously disastrous
  results.  The rest is pretty much fixes for the corresponding fallout.

  The EFI fixes fixes an arithmetic overflow on 32-bit systems and
  quiets some build warnings.

  Finally, when invoking an invalid system call number on x86-32, we
  bypass a bunch of handling, which can make the audit code oops"

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi-pstore: Fix an overflow on 32-bit builds
  x86/vdso: Error out in vdso2c if DT_RELA is present
  x86/vdso: Move DISABLE_BRANCH_PROFILING into the vdso makefile
  x86_32, signal: Fix vdso rt_sigreturn
  x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
  x86/vdso: Create .build-id links for unstripped vdso files
  x86/vdso: Remove some redundant in-memory section headers
  x86/vdso: Improve the fake section headers
  x86/vdso2c: Use better macros for ELF bitness
  x86/vdso: Discard the __bug_table section
  efi: Fix compiler warnings (unused, const, type)
2014-06-27 18:43:03 -07:00
Linus Torvalds
c9a606660e Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "This is dominated by a large number of changes necessary for the MIPS
  BPF code.  code.  Aside of that there are

   - a fix for the MSC system controller support code.
   - a Turbochannel fix.
   - a recordmcount fix that's MIPS-specific.
   - barrier fixes to smp-cps / pm-cps after unrelated changes elsewhere
     in the kernel.
   - revert support for MSA registers in the signal frames.  The
     reverted patch did modify the signal stack frame which of course is
     inacceptable.
   - fix math-emu build breakage with older compilers.
   - some related cleanup.
   - fix Lasat build error if CONFIG_CRC32 isn't set to y by the user"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (27 commits)
  MIPS: Lasat: Fix build error if CRC32 is not enabled.
  TC: Handle device_register() errors.
  MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region
  MIPS: bpf: Fix stack space allocation for BPF memwords on MIPS64
  MIPS: BPF: Use 32 or 64-bit load instruction to load an address to register
  MIPS: bpf: Fix PKT_TYPE case for big-endian cores
  MIPS: BPF: Prevent kernel fall over for >=32bit shifts
  MIPS: bpf: Drop update_on_xread and always initialize the X register
  MIPS: bpf: Fix is_range() semantics
  MIPS: bpf: Use pr_debug instead of pr_warn for unhandled opcodes
  MIPS: bpf: Fix return values for VLAN_TAG_PRESENT case
  MIPS: bpf: Use correct mask for VLAN_TAG case
  MIPS: bpf: Fix branch conditional for BPF_J{GT/GE} cases
  MIPS: bpf: Add SEEN_SKB to flags when looking for the PKT_TYPE
  MIPS: bpf: Use 'andi' instead of 'and' for the VLAN cases
  MIPS: bpf: Return error code if the offset is a negative number
  MIPS: bpf: Use the LO register to get division's quotient
  MIPS: mm: uasm: Fix lh micro-assembler instruction
  MIPS: uasm: Add SLT uasm instruction
  MIPS: uasm: Add s3s1s2 instruction builder
  ...
2014-06-27 18:37:56 -07:00
Linus Torvalds
1857a5b65c ARC fixes for 3.16
Some SMP changes, a ptrace request for NPTL debugging,
 bunch of build breakages/warnings
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Merge tag 'arc-fixes-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "Some SMP changes, a ptrace request for NPTL debugging, bunch of build
  breakages/warnings"

* tag 'arc-fixes-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [SMP] Enable icache coherency
  ARC: [SMP] Fix IPI IRQ registration
  ARC: Implement ptrace(PTRACE_GET_THREAD_AREA)
  ARC: optimize kernel bss clearing in early boot code
  ARC: Fix build breakage for !CONFIG_ARC_DW2_UNWIND
  ARC: fix build warning in devtree
  ARC: remove checks for CONFIG_ARC_MMU_V4
2014-06-27 18:36:50 -07:00
Linus Torvalds
8dd68eb3ca Compress bugfix for 3.16-rc3
Here is another lz4 bugfix for 3.16-rc3 that resolves a reported issue
 with that compression algorithm.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'compress-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull compress bugfix from Greg KH:
 "Here is another lz4 bugfix for 3.16-rc3 that resolves a reported issue
  with that compression algorithm"

* tag 'compress-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  lz4: fix another possible overrun
2014-06-27 18:33:49 -07:00
Linus Torvalds
772205d8e4 Bug-fix:
* Don't assume that 0 as a physical address is incorrect and fail the request.
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Merge tag 'stable/for-linus-3.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb

Pull swiotlb bugfix from Konrad Rzeszutek Wilk:
 "One bug-fix that had been in tree for quite some time.  We had assumed
  that the physical address zero was invalid and would fail it.  But
  that is not true and on some architectures it is not reserved and
  valid.  This fixes it"

* tag 'stable/for-linus-3.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: don't assume PA 0 is invalid
2014-06-27 18:04:22 -07:00
Linus Torvalds
cf0d135649 sound fixes for 3.16-rc3
Here includes a few patchset for fixing mostly HD-audio issues in
 addition to a patch assuring the compress API bytes alignment and a
 fix for the die-hard existing race condition at USB-audio
 disconnection.  The volume looks big in Realtek HD-audio code, but
 it's just a translation of the fixup tables, and the actual changes
 are rather trivial.
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Merge tag 'sound-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Here includes a few patchset for fixing mostly HD-audio issues in
  addition to a patch assuring the compress API bytes alignment and a
  fix for the die-hard existing race condition at USB-audio
  disconnection.  The volume looks big in Realtek HD-audio code, but
  it's just a translation of the fixup tables, and the actual changes
  are rather trivial"

* tag 'sound-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - restore BCLK M/N values when resuming HSW/BDW display controller
  ALSA: usb-audio: Fix races at disconnection and PCM closing
  ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13
  ALSA: hda - Make the pin quirk tables use the SND_HDA_PIN_QUIRK macro
  ALSA: hda - Make a SND_HDA_PIN_QUIRK macro
  ALSA: hda - Add pin quirk for Dell XPS 15
  ALSA: hda - hdmi: call overridden init on resume
  ALSA: hda - Fix usage of "model" module parameter
  ALSA: compress: fix the struct alignment to 4 bytes
2014-06-27 17:21:36 -07:00
Linus Torvalds
5ded6ea462 Couple of simple fixes due for the v3.16 -rcs.
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Merge tag 'mfd-fixes-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD fixes from Lee Jones:
 "Couple of simple fixes due for the v3.16 -rcs"

* tag 'mfd-fixes-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: ab8500: Fix dt irq mapping
  mfd: davinci: Voicecodec needs regmap_mmio
  mfd: STw481x: Allow modular build
  mfd: UCB1x00: Enable modular build
2014-06-27 17:20:48 -07:00
Linus Torvalds
c163b524d2 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Exynos, i915 and msm fixes and one core fix.

  exynos:
     hdmi power off and mixer issues

  msm:
     iommu, build fixes,

  i915:
     regression races and warning fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
  drm/i915: vlv_prepare_pll is only needed in case of non DSI interfaces
  drm: fix NULL pointer access by wrong ioctl
  drm/exynos: enable vsync interrupt while waiting for vblank
  drm/exynos: soft reset mixer before reconfigure after power-on
  drm/exynos: allow multiple layer updates per vsync for mixer
  drm/i915: Hold the table lock whilst walking the file's idr and counting the objects in debugfs
  drm/i915: BDW: Adding Reserved PCI IDs.
  drm/i915: Only mark the ctx as initialised after a SET_CONTEXT operation
  drm/exynos: stop mixer before gating clocks during poweroff
  drm/exynos: set power state variable after enabling clocks and power
  drm/exynos: disable unused windows on apply
  drm/exynos: Fix de-registration ordering
  drm/exynos: change zero to NULL for sparse
  drm/exynos: dpi: Fix NULL pointer dereference with legacy bindings
  drm/exynos: hdmi: fix power order issue
  drm/i915: default to having backlight if VBT not available
  drm/i915: cache hw power well enabled state
  drm/msm: fix IOMMU cleanup for -EPROBE_DEFER
  drm/msm: use PAGE_ALIGNED instead of IS_ALIGNED(PAGE_SIZE)
  drm/msm/hdmi: set hdp clock rate before prepare_enable
  ...
2014-06-27 17:05:39 -07:00