luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

watchdog: Propagate Book E WDT period changes to all cores

Browse Source 
When the watchdog period is changed, it needs to be propagated to all cores
in addition to the core that performed the change.

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Randy Vinson 2010-12-06 14:02:23 -07:00 committed by Wim Van Sebroeck
parent 5d63c13415
commit 6ae98ed186
1 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/watchdog/booke_wdt.c
View File

@ -85,6 +85,22 @@ static unsigned int sec_to_period(unsigned int secs)
return 0;
}
static void __booke_wdt_set(void *data)
{
u32 val;
val = mfspr(SPRN_TCR);
val &= ~WDTP_MASK;
val |= WDTP(booke_wdt_period);
mtspr(SPRN_TCR, val);
}
static void booke_wdt_set(void)
{
on_each_cpu(__booke_wdt_set, NULL, 0);
}
static void __booke_wdt_ping(void *data)
{
mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
@ -181,8 +197,7 @@ static long booke_wdt_ioctl(struct file *file,
#else
booke_wdt_period = tmp;
#endif
mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP_MASK) |
WDTP(booke_wdt_period));
booke_wdt_set();
return 0;
case WDIOC_GETTIMEOUT:
return put_user(booke_wdt_period, p);