github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 22:14:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

rtc: rtc-rk-timer: Fix time64 to tick convert

Browse Source 
There's an u64 to int convert which may cause overflow.

Change-Id: I7feb46e501828666353506c37a1f35db39ff45f7
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
This commit is contained in:
Jeffy Chen 2018-08-29 09:41:33 +08:00 committed by Tao Huang
parent d96ea9d580
commit cab1edc0e8
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/rtc/rtc-rk-timer.c
View File

@ -76,11 +76,6 @@ static inline u64 tick_to_sec(struct rk_timer_rtc *rk_timer_rtc, u64 tick)
return tick;
}
static inline u64 sec_to_tick(struct rk_timer_rtc *rk_timer_rtc, int sec)
{
return sec * rk_timer_rtc->freq;
}
static inline u64 ms_to_tick(struct rk_timer_rtc *rk_timer_rtc, int ms)
{
return ms * rk_timer_rtc->freq / 1000;
@ -93,7 +88,7 @@ static inline u64 tick_to_time64(struct rk_timer_rtc *rk_timer_rtc, u64 tick)
static inline u64 time64_to_tick(struct rk_timer_rtc *rk_timer_rtc, u64 time)
{
return sec_to_tick(rk_timer_rtc, time - rk_timer_rtc->timebase);
return (time - rk_timer_rtc->timebase) * rk_timer_rtc->freq;
}
static inline int rk_timer_rtc_write64(struct rk_timer_rtc *rk_timer_rtc,