Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 12/13] drivers/amba/bus.c: use clk_prepare_enable and clk_disable_unprepare | Date | Sun, 26 Aug 2012 18:01:04 +0200 |
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From: Julia Lawall <Julia.Lawall@lip6.fr>
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/)
// <smpl> @@ expression e; @@
- clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e);
@@ expression e; @@
- clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/amba/bus.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index e8eb91b..6374ee6 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -329,17 +329,9 @@ static int amba_get_enable_pclk(struct amba_device *pcdev) if (IS_ERR(pclk)) return PTR_ERR(pclk); - ret = clk_prepare(pclk); - if (ret) { - clk_put(pclk); - return ret; - } - - ret = clk_enable(pclk); - if (ret) { - clk_unprepare(pclk); + ret = clk_prepare_enable(pclk); + if (ret) clk_put(pclk); - } return ret; } @@ -348,8 +340,7 @@ static void amba_put_disable_pclk(struct amba_device *pcdev) { struct clk *pclk = pcdev->pclk; - clk_disable(pclk); - clk_unprepare(pclk); + clk_disable_unprepare(pclk); clk_put(pclk); }
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