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linux/drivers/clocksource
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Chen-Yu Tsai b53e7d000d clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function 
The bootloader (U-boot) sometimes uses this timer for various delays.
It uses it as a ongoing counter, and does comparisons on the current
counter value. The timer counter is never stopped.

In some cases when the user interacts with the bootloader, or lets
it idle for some time before loading Linux, the timer may expire,
and an interrupt will be pending. This results in an unexpected
interrupt when the timer interrupt is enabled by the kernel, at
which point the event_handler isn't set yet. This results in a NULL
pointer dereference exception, panic, and no way to reboot.

Clear any pending interrupts after we stop the timer in the probe
function to avoid this.

Cc: stable@vger.kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-26 15:56:01 +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/drivers/mips-gic-timer: Make gic_clocksource_of_init() return int 2016-08-17 13:08:32 +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 clocksource/drivers/pxa: Fix include files for compilation 2016-08-24 11:16:38 +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 clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function 2016-08-26 15:56:01 +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 drivers/clocksource/pistachio: Fix memory corruption in init 2016-08-26 15:55:59 +02:00
timer-atlas7.c clocksource/atlas7: Convert to hotplug state machine 2016-07-15 10:41:45 +02:00
timer-atmel-pit.c clocksource/drivers/timer-atmel-pit: Enable mck clock 2016-08-26 15:55:58 +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