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16c8eba0fe
linux/drivers/clocksource
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Arnd Bergmann 16c8eba0fe clocksource/drivers/kona: Fix get_counter() error handling 
I could not figure out why, but GCC cannot prove that the
kona_timer_init() function always initializes its two outputs,
and we get a warning for the use of the 'lsw' variable later,
which is obviously correct.

  drivers/clocksource/bcm_kona_timer.c: In function 'kona_timer_init':
  drivers/clocksource/bcm_kona_timer.c:119:13: error: 'lsw' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Slightly reordering the loop makes the warning disappear, after
it becomes more obvious to the compiler that the loop is
always entered on the first iteration.

As pointed out by Ray Jui, there is a related problem in the
way we deal with the loop running into the limit, as we just
keep going there with an invalid counter data, so instead we
now propagate a -ETIMEDOUT result to the caller.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bcm-kernel-feedback-list@broadcom.com
Link: http://lkml.kernel.org/r/1471429296-9053-2-git-send-email-daniel.lezcano@linaro.org
Link: https://patchwork.kernel.org/patch/9174261/
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-17 13:08:31 +02:00
..
acpi_pm.c clocksource/drivers/acpi_pm: Convert to pr_* macros 2015-12-29 12:52:57 +01:00
arm_arch_timer.c clocksource/arm_arch_timer: Force per-CPU interrupt to be level-triggered 2016-08-01 16:15:53 +02:00
arm_global_timer.c clocksource/arm_global_timer: Convert to hotplug state machine 2016-07-15 10:41:44 +02:00
armv7m_systick.c clocksource/drivers/armv7m_systick: Add the COMPILE_TEST option 2016-06-28 10:22:05 +02:00
asm9260_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
bcm2835_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
bcm_kona_timer.c clocksource/drivers/kona: Fix get_counter() error handling 2016-08-17 13:08:31 +02:00
cadence_ttc_timer.c clocksource/drivers/cadence_ttc: fix a return value in case of error 2016-07-07 09:44:38 +02:00
clksrc_st_lpc.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
clksrc-dbx500-prcmu.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
clksrc-probe.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
clps711x-timer.c ARM: SoC driver updates for v4.8 2016-08-01 18:36:01 -04:00
cs5535-clockevt.c
dummy_timer.c clocksource/dummy_timer: Convert to hotplug state machine 2016-07-15 10:40:24 +02:00
dw_apb_timer_of.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
dw_apb_timer.c clockevents/drivers/dw_apb_timer: Implement ->set_state_oneshot_stopped() 2016-04-28 15:09:03 +02:00
em_sti.c clocksource/drivers/em_sti: Remove unneeded memset()s 2015-10-15 17:41:59 +02:00
exynos_mct.c clocksource/exynos_mct: Convert to hotplug state machine 2016-07-15 10:41:44 +02:00
fsl_ftm_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
h8300_timer8.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
h8300_timer16.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
h8300_tpu.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
i8253.c
Kconfig clocksource/drivers/arm_arch_timer: Control the evtstrm via the cmdline 2016-06-28 11:35:50 +02:00
Makefile clocksource/drivers/integrator-ap: Add the COMPILE_TEST option 2016-06-28 10:22:16 +02:00
meson6_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
metag_generic.c clocksource/metag: Convert to hotplug state machine 2016-07-15 10:40:25 +02:00
mips-gic-timer.c clocksource/mips-gic: Convert to hotplug state machine 2016-07-15 10:40:26 +02:00
mmio.c clocksource: Mmio: remove artificial 32bit limitation 2015-12-10 19:37:18 +01:00
moxart_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
mps2-timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
mtk_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
mxs_timer.c clocksource/drivers/mxs: Remove useless header <asm/mach/time.h> 2016-06-28 10:22:09 +02:00
nomadik-mtu.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
numachip.c
pxa_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
qcom-timer.c clocksource/qcom-timer: Convert to hotplug state machine 2016-07-15 10:40:25 +02:00
rockchip_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
samsung_pwm_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
scx200_hrt.c
sh_cmt.c clocksource/drivers/sh_cmt: Remove unneeded memset() in sh_cmt_setup() 2015-10-15 17:42:00 +02:00
sh_mtu2.c clocksource/drivers/sh_mtu2: Fix multiple shutdown call issue 2015-10-28 15:22:56 +01:00
sh_tmu.c
sun4i_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
tango_xtal.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
tcb_clksrc.c clockevents/tcb_clksrc: Prevent disabling an already disabled clock 2016-01-15 11:40:44 +01:00
tegra20_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
time-armada-370-xp.c clocksource/drivers/time-armada-370-xp: Fix the clock reference 2016-08-17 13:08:31 +02:00
time-efm32.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
time-lpc32xx.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
time-orion.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
time-pistachio.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-atlas7.c clocksource/atlas7: Convert to hotplug state machine 2016-07-15 10:41:45 +02:00
timer-atmel-pit.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-atmel-st.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-digicolor.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-imx-gpt.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-integrator-ap.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-keystone.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-nps.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-oxnas-rps.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-prima2.c clocksource/drivers/prima2: Remove useless header <asm/mach/time.h> 2016-06-28 10:22:11 +02:00
timer-sp804.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-sp.h
timer-stm32.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-sun5i.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-ti-32k.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
timer-u300.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
versatile.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
vf_pit_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
vt8500_timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
zevio-timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00