From d9df0ef1eb9e1048f0ab4a6e93c85f60c5594c2f Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 12 Mar 2012 09:52:17 +0530 Subject: 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 Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/sp805_wdt.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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; } -- cgit v1.2.1