leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
e4c3e13329
linux/drivers/counter
History
Fabrice Gasnier e4c3e13329 counter: stm32-timer-cnt: fix ceiling write max value 
The ceiling value isn't checked before writing it into registers. The user
could write a value higher than the counter resolution (e.g. 16 or 32 bits
indicated by max_arr). This makes most significant bits to be truncated.
Fix it by checking the max_arr to report a range error [1] to the user.

[1] https://lkml.org/lkml/2021/2/12/358

Fixes: ad29937e20 ("counter: Add STM32 Timer quadrature encoder")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1614696235-24088-1-git-send-email-fabrice.gasnier@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-03-06 16:47:03 +00:00
..
104-quad-8.c Linux 5.8-rc6 2020-07-20 09:37:31 +02:00
counter.c counter: Simplify the count_read and count_write callbacks 2019-10-18 19:47:27 +01:00
ftm-quaddec.c counter: Simplify the count_read and count_write callbacks 2019-10-18 19:47:27 +01:00
Kconfig counter: Add microchip TCB capture counter 2020-07-20 13:04:40 +01:00
Makefile counter: Add microchip TCB capture counter 2020-07-20 13:04:40 +01:00
microchip-tcb-capture.c counter: microchip-tcb-capture: Fix CMR value check 2020-12-03 19:40:31 +00:00
stm32-lptimer-cnt.c iio: remove explicit IIO device parent assignment 2020-06-14 11:49:59 +01:00
stm32-timer-cnt.c counter: stm32-timer-cnt: fix ceiling write max value 2021-03-06 16:47:03 +00:00
ti-eqep.c counter:ti-eqep: remove floor 2021-01-14 20:56:56 +00:00