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booke/wdt: some ioctls do not return values properly 

Fix some booke wdt ioctls return value error.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
hifive-unleashed-5.1
Tiejun Chen 2012-08-07 09:59:40 +08:00 committed by Kumar Gala
parent 09a3017a58
commit 127c6e7311
1 changed files with 3 additions and 4 deletions
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7
drivers/watchdog/booke_wdt.c
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@ -166,18 +166,17 @@ static long booke_wdt_ioctl(struct file *file,
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user((void *)arg, &ident, sizeof(ident)))
return -EFAULT;
return copy_to_user(p, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
return put_user(0, p);
case WDIOC_GETBOOTSTATUS:
/* XXX: something is clearing TSR */
tmp = mfspr(SPRN_TSR) & TSR_WRS(3);
/* returns CARDRESET if last reset was caused by the WDT */
return (tmp ? WDIOF_CARDRESET : 0);
return put_user((tmp ? WDIOF_CARDRESET : 0), p);
case WDIOC_SETOPTIONS:
if (get_user(tmp, p))
return -EINVAL;
return -EFAULT;
if (tmp == WDIOS_ENABLECARD) {
booke_wdt_ping();
break;