From 63fbbc169674496fc2ae501d97c3905232a3bf64 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 26 Aug 2012 18:01:02 +0200 Subject: [PATCH] watchdog: sp805_wdt.c: use clk_prepare_enable and clk_disable_unprepare Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. They make the code more concise, and ensure that clk_unprepare is called when clk_enable fails. A simplified version of the semantic patch that introduces calls to these functions is as follows: (http://coccinelle.lip6.fr/) // @@ expression e; @@ - clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e); @@ expression e; @@ - clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // Signed-off-by: Julia Lawall Acked-by: Viresh Kumar Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/sp805_wdt.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c index 76c73cbf004..8872642505c 100644 --- a/drivers/watchdog/sp805_wdt.c +++ b/drivers/watchdog/sp805_wdt.c @@ -130,16 +130,10 @@ 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); + ret = clk_prepare_enable(wdt->clk); if (ret) { dev_err(&wdt->adev->dev, "clock enable fail"); - clk_unprepare(wdt->clk); return ret; } } @@ -190,8 +184,7 @@ static int wdt_disable(struct watchdog_device *wdd) readl_relaxed(wdt->base + WDTLOCK); spin_unlock(&wdt->lock); - clk_disable(wdt->clk); - clk_unprepare(wdt->clk); + clk_disable_unprepare(wdt->clk); return 0; }