Chen-Yu Tsai 5fa42205ab clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function ... commit b53e7d000d upstream. 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. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-09-24 10:07:35 +02:00
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acpi_pm.c
arm_arch_timer.c
arm_global_timer.c
armv7m_systick.c
asm9260_timer.c
bcm_kona_timer.c
bcm2835_timer.c
cadence_ttc_timer.c
clksrc_st_lpc.c
clksrc-dbx500-prcmu.c
clksrc-probe.c
clps711x-timer.c
cs5535-clockevt.c
dummy_timer.c
dw_apb_timer_of.c
dw_apb_timer.c
em_sti.c
exynos_mct.c
fsl_ftm_timer.c	clocksource/fsl: Avoid harmless 64-bit warnings	2015-11-16 19:07:08 +01:00
h8300_timer8.c
h8300_timer16.c
h8300_tpu.c
i8253.c
Kconfig	clocksource: Disallow drivers for ARCH_USES_GETTIMEOFFSET	2015-11-16 19:07:08 +01:00
Makefile
meson6_timer.c
metag_generic.c
mips-gic-timer.c
mmio.c	clocksource: Mmio: remove artificial 32bit limitation	2015-12-10 19:37:18 +01:00
moxart_timer.c
mtk_timer.c
mxs_timer.c
nomadik-mtu.c
numachip.c
pxa_timer.c
qcom-timer.c
rockchip_timer.c
samsung_pwm_timer.c
scx200_hrt.c
sh_cmt.c
sh_mtu2.c
sh_tmu.c
sun4i_timer.c	clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function	2016-09-24 10:07:35 +02:00
tango_xtal.c
tcb_clksrc.c	clockevents/tcb_clksrc: Prevent disabling an already disabled clock	2016-03-03 15:07:15 -08:00
tegra20_timer.c
time-armada-370-xp.c
time-efm32.c
time-lpc32xx.c
time-orion.c
time-pistachio.c
timer-atlas7.c
timer-atmel-pit.c
timer-atmel-st.c
timer-digicolor.c
timer-imx-gpt.c
timer-integrator-ap.c
timer-keystone.c
timer-prima2.c
timer-sp.h
timer-sp804.c
timer-stm32.c
timer-sun5i.c
timer-ti-32k.c
timer-u300.c
versatile.c
vf_pit_timer.c
vt8500_timer.c	clocksource/drivers/vt8500: Increase the minimum delta	2016-03-03 15:07:11 -08:00
zevio-timer.c