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| author | Axel Lin <axel.lin@ingics.com> | 2012-12-22 11:07:01 +0800 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2013-01-02 12:06:49 +0100 |
| commit | 98e4a293895dda2b74476ac3a9f79c58b5d0155a (patch) | |
| tree | d79ceba10dcf42c5c416b685aa80b2f047054d6b /drivers/watchdog | |
| parent | ee8c94adff9bd8609e70fb2ecdfaa71f561ed40d (diff) | |
| download | linux-98e4a293895dda2b74476ac3a9f79c58b5d0155a.tar.bz2 | |
watchdog: da9055: Don't update wdt_dev->timeout in da9055_wdt_set_timeout error path
Otherwise, WDIOC_GETTIMEOUT returns wrong value if set_timeout fails.
This patch also removes unnecessary ret variable in da9055_wdt_ping function.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/da9055_wdt.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/watchdog/da9055_wdt.c b/drivers/watchdog/da9055_wdt.c index 31d537959bcc..f5ad10546fc9 100644 --- a/drivers/watchdog/da9055_wdt.c +++ b/drivers/watchdog/da9055_wdt.c @@ -72,20 +72,21 @@ static int da9055_wdt_set_timeout(struct watchdog_device *wdt_dev, DA9055_TWDSCALE_MASK, da9055_wdt_maps[i].reg_val << DA9055_TWDSCALE_SHIFT); - if (ret < 0) + if (ret < 0) { dev_err(da9055->dev, "Failed to update timescale bit, %d\n", ret); + return ret; + } wdt_dev->timeout = timeout; - return ret; + return 0; } static int da9055_wdt_ping(struct watchdog_device *wdt_dev) { struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev); struct da9055 *da9055 = driver_data->da9055; - int ret; /* * We have a minimum time for watchdog window called TWDMIN. A write @@ -94,10 +95,8 @@ static int da9055_wdt_ping(struct watchdog_device *wdt_dev) mdelay(DA9055_TWDMIN); /* Reset the watchdog timer */ - ret = da9055_reg_update(da9055, DA9055_REG_CONTROL_E, - DA9055_WATCHDOG_MASK, 1); - - return ret; + return da9055_reg_update(da9055, DA9055_REG_CONTROL_E, + DA9055_WATCHDOG_MASK, 1); } static void da9055_wdt_release_resources(struct kref *r) |