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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2012-12-05 18:46:06 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-12-06 14:58:57 -0500 |
| commit | 7280b51a29f8e6cc7d449d565182d1e1b6183907 (patch) | |
| tree | 65237eab1130bbb286b98f3827c15346f7583533 | |
| parent | 7ffbffe37de3979d43c1105e38eb2918bf5d35fe (diff) | |
| download | linux-7280b51a29f8e6cc7d449d565182d1e1b6183907.tar.gz linux-7280b51a29f8e6cc7d449d565182d1e1b6183907.tar.bz2 linux-7280b51a29f8e6cc7d449d565182d1e1b6183907.zip | |
ssb: extif: add check for max value before setting watchdog register
Prevent the watchdog register on the extif core to be set to a too
high value.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/ssb/driver_extif.c | 5 | ||||
| -rw-r--r-- | include/linux/ssb/ssb_driver_extif.h | 1 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ssb/driver_extif.c b/drivers/ssb/driver_extif.c index dc47f30e9cf7..0aa4c2a85774 100644 --- a/drivers/ssb/driver_extif.c +++ b/drivers/ssb/driver_extif.c @@ -112,9 +112,10 @@ void ssb_extif_get_clockcontrol(struct ssb_extif *extif, *m = extif_read32(extif, SSB_EXTIF_CLOCK_SB); } -void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, - u32 ticks) +void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks) { + if (ticks > SSB_EXTIF_WATCHDOG_MAX_TIMER) + ticks = SSB_EXTIF_WATCHDOG_MAX_TIMER; extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks); } diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index 2604efa7dc4d..b618188939d2 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -152,6 +152,7 @@ /* watchdog */ #define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */ +#define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1) #ifdef CONFIG_SSB_DRIVER_EXTIF |