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| author | Viresh Kumar <viresh.kumar@st.com> | 2012-03-12 09:52:17 +0530 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2012-05-30 07:56:44 +0200 |
| commit | d9df0ef1eb9e1048f0ab4a6e93c85f60c5594c2f (patch) | |
| tree | 87c5d2a8d153a27472f27b0d6a3a2f70d173f329 /drivers/watchdog | |
| parent | 4a516539faba13deca2399cff8faaa84d251a4ea (diff) | |
| download | lwn-d9df0ef1eb9e1048f0ab4a6e93c85f60c5594c2f.tar.gz lwn-d9df0ef1eb9e1048f0ab4a6e93c85f60c5594c2f.zip | |
watchdog: sp805_wdt: Add clk_{un}prepare support
clk_{un}prepare() routines are required for required on some platforms to run
part of clk enable/disable() routines from contexts that can schedule.
This patch adds support for these routines in sp805 driver.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/sp805_wdt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c index 18d4bcfd1bfc..afcd13676542 100644 --- a/drivers/watchdog/sp805_wdt.c +++ b/drivers/watchdog/sp805_wdt.c @@ -130,9 +130,16 @@ static int wdt_config(struct watchdog_device *wdd, bool ping) int ret; if (!ping) { + ret = clk_prepare(wdt->clk); + if (ret) { + dev_err(&wdt->adev->dev, "clock prepare fail"); + return ret; + } + ret = clk_enable(wdt->clk); if (ret) { dev_err(&wdt->adev->dev, "clock enable fail"); + clk_unprepare(wdt->clk); return ret; } } @@ -184,6 +191,7 @@ static int wdt_disable(struct watchdog_device *wdd) spin_unlock(&wdt->lock); clk_disable(wdt->clk); + clk_unprepare(wdt->clk); return 0; } |