linux.git/drivers/clocksource, branch v4.13-rc2

clocksource/drivers/timer-of: Handle of_irq_get_byname() result correctly

2017-07-17T20:43:00+00:00

of_irq_get_byname() may return a negative error number as well as 0 on
failure, while timer_irq_init() only checks for 0, blithely continuing with
the call to request_[percpu_]irq() -- those functions expect *unsigned int*,
so would probably fail anyway when a large IRQ number resulting from a
conversion of a negative error number is passed to them... This, however,
is incorrect behavior -- error number is not IRQ number.

Filter out the negative error numbers, complain, and return them to the
timer_irq_init()'s callers...

Fixes: dc11bae78529 ("clocksource/drivers: Add timer-of common init routine")
Signed-off-by: Sergei Shtylyov 
Signed-off-by: Thomas Gleixner 
Cc: Daniel Lezcano 
Link: http://lkml.kernel.org/r/20170717180114.678825147@cogentembedded.com

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2017-07-04T21:47:47+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "New SoC specific drivers:

   - NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later)
     based on the "BPMP" firmware

   - Clocksource and system controller drivers for the newly added
     Action Semi platforms (both arm and arm64).

  Reset subsystem, merged through arm-soc by tradition:

   - New drivers for Altera Stratix10, TI Keystone and Cortina Gemini
     SoCs

   - Various subsystem-wide cleanups

  Updates for existing SoC-specific drivers

   - TI GPMC (General Purpose Memory Controller)

   - Mediatek "scpsys" system controller support for MT6797

   - Broadcom "brcmstb_gisb" bus arbitrer

   - ARM SCPI firmware

   - Renesas "SYSC" system controller

  One more driver update was submitted for the Freescale/NXP DPAA data
  path acceleration that has previously been used on PowerPC chips. I
  ended up postponing the merge until some API questions for its unusual
  MMIO access are resolved"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
  clocksource: owl: Add S900 support
  clocksource: Add Owl timer
  soc: renesas: rcar-sysc: Use GENPD_FLAG_ALWAYS_ON
  firmware: tegra: Fix locking bugs in BPMP
  soc/tegra: flowctrl: Fix error handling
  soc/tegra: bpmp: Implement generic PM domains
  soc/tegra: bpmp: Update ABI header
  PM / Domains: Allow overriding the ->xlate() callback
  soc: brcmstb: enable drivers for ARM64 and BMIPS
  soc: renesas: Rework Kconfig and Makefile logic
  reset: Add the TI SCI reset driver
  dt-bindings: reset: Add TI SCI reset binding
  reset: use kref for reference counting
  soc: qcom: smsm: Improve error handling, quiesce probe deferral
  cpufreq: scpi: use new scpi_ops functions to remove duplicate code
  firmware: arm_scpi: add support to populate OPPs and get transition latency
  dt-bindings: reset: Add reset manager offsets for Stratix10
  memory: omap-gpmc: add error message if bank-width property is absent
  memory: omap-gpmc: make dts snippet include semicolon
  reset: Add a Gemini reset controller
  ...

clocksource/drivers/mips-gic-timer: Fix an error code in 'gic_clocksource_of_init()'

2017-06-27T09:25:40+00:00

'clk' is a valid pointer at this point. So calling PTR_ERR on it is
pointess.

Return the error code from 'clk_prepare_enable()' if it fails instead.

Signed-off-by: Christophe JAILLET 
Signed-off-by: Daniel Lezcano

clocksource/drivers/fsl_ftm_timer: Unmap region obtained by of_iomap

2017-06-27T09:25:39+00:00

In case of error at init time, rollback iomapping.

Signed-off-by: Arvind Yadav 
Signed-off-by: Daniel Lezcano

clocksource/drivers/tcb_clksrc: Make IO endian agnostic

2017-06-27T09:25:20+00:00

Now that AVR32 is gone, we can use the proper IO accessors that are
correctly handling endianness.

Signed-off-by: Alexandre Belloni 
Acked-by: Nicolas Ferre 
Signed-off-by: Daniel Lezcano

clocksource/drivers/sun4i: Switch to the timer-of common init

2017-06-26T16:32:04+00:00

Previously a framework to factor out the drivers init function has been
merged.

Use this common framework in this driver, we get:

Before:

text    data     bss     dec   hex filename
1787     384      12    2183   887 drivers/clocksource/sun4i_timer.o

After:

text    data     bss     dec   hex filename
1407     512       0    1919   77f drivers/clocksource/sun4i_timer.o

Signed-off-by: Daniel Lezcano 
Tested-by: Chen-Yu Tsai

clocksource/drivers/timer-of: Fix invalid iomap check

2017-06-26T16:32:04+00:00

A typo in the code checks the return value of iomap against !NULL
and, thus, fails everytime the mapping succeed.

Fix this by inverting the condition in the check.

Signed-off-by: Daniel Lezcano

clocksource/drivers: Fix uninitialized variable use in timer_of_init

2017-06-21T22:04:26+00:00

If none of the flags are set, 'ret' is uninitialized as pointed out
by gcc:

drivers/clocksource/timer-of.c: In function 'timer_of_init':
drivers/clocksource/timer-of.c:160:9: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Since calling the function without any of the flags is an error,
set the return value to -EINVAL for that case.

[ tglx: Get rid of the silly backwards goto while at it ]

Fixes: dc11bae78529 ("clocksource/drivers: Add timer-of common init routine")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Thomas Gleixner 
Cc: Daniel Lezcano 
Link: http://lkml.kernel.org/r/20170621215005.3870011-1-arnd@arndb.de

Merge branch 'timers/urgent' into timers/core

2017-06-21T07:07:52+00:00

Pick up dependent changes.

clocksource: owl: Add S900 support

2017-06-18T19:20:06+00:00

The Actions Semi S900 SoC provides four 32-bit timers, TIMER0/1/2/3,
but no 2Hz timers.

An S900 datasheet can be found in 96Boards documentation:
https://github.com/96boards/documentation/blob/master/ConsumerEdition/Bubblegum-96/HardwareDocs/SoC_bubblegum96.pdf

Acked-by: Daniel Lezcano 
Signed-off-by: Andreas Färber