qemu-e2k/hw/timer
Christian Svensson 055762479b aspeed/timer: Ensure positive muldiv delta
If the host decrements the counter register that results in a negative
delta. This is then passed to muldiv64 which only handles unsigned
numbers resulting in bogus results.

This fix ensures the delta being operated on is positive.

Test case: kexec a kernel using aspeed_timer and it will freeze on the
second bootup when the kernel initializes the timer. With this patch
that no longer happens and the timer appears to run OK.

Signed-off-by: Christian Svensson <bluecmd@google.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 20190618165311.27066-12-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-07-01 17:28:59 +01:00
..
a9gtimer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
allwinner-a10-pit.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
altera_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_mptimer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
armv7m_systick.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
aspeed_rtc.c hw: timer: Add ASPEED RTC device 2019-07-01 17:28:59 +01:00
aspeed_timer.c aspeed/timer: Ensure positive muldiv delta 2019-07-01 17:28:59 +01:00
cadence_ttc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
cmsdk-apb-dualtimer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
cmsdk-apb-timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
digic-timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
ds1338.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
etraxfs_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
exynos4210_mct.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
exynos4210_pwm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
exynos4210_rtc.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
grlib_gptimer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
hpet.c hpet: Report warnings with warn_report(), not error_printf() 2019-04-17 21:21:49 +02:00
i8254_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
i8254.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
imx_epit.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
imx_gpt.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
Kconfig
lm32_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
m41t80.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
m48t59-internal.h Normalize header guard symbol definition. 2019-05-13 08:58:55 +02:00
m48t59-isa.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
m48t59.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
Makefile.objs hw: timer: Add ASPEED RTC device 2019-07-01 17:28:59 +01:00
mc146818rtc.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
milkymist-sysctl.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
mips_gictimer.c
mss-timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
nrf51_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
omap_gptimer.c
omap_synctimer.c
pl031.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
puv3_ost.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
pxa2xx_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
sh_timer.c
slavio_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
stm32f2xx_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
sun4v-rtc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
trace-events hw: timer: Add ASPEED RTC device 2019-07-01 17:28:59 +01:00
twl92230.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
xilinx_timer.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
xlnx-zynqmp-rtc.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00