Messages in this thread | | | From | Julia Lawall <> | Subject | [PATCH 0/13] use clk_prepare_enable and clk_disable_unprepare | Date | Sun, 26 Aug 2012 18:00:52 +0200 |
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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.
The transformation is made using the following semantic patch (http://coccinelle.lip6.fr/). This semantic patch is not really safe, in that it doesn't check for clk_disable's that are relying on the removed clk_unprepare's. These cases have been adjusted by hand.
// <smpl> @@ expression e; @@
- clk_prepare(e); - clk_enable(e); + clk_prepare_enable(e);
@@ expression e; identifier r; statement S; @@
- r = clk_prepare(e); if (r) S - clk_enable(e); + r = clk_prepare_enable(e); if (r) S
@@ expression e; expression r; @@
- clk_prepare(e); r = - clk_enable + clk_prepare_enable (e); if (r) { ... - clk_unprepare(e); // unsafe! ... return ...; }
@@ expression e; expression r; @@
- clk_prepare(e); r = - clk_enable + clk_prepare_enable (e);
@@ expression e; statement S; @@
- if (clk_prepare(e)) S - clk_enable(e); + if (clk_prepare_enable(e)) S
@@ expression e; @@
- clk_prepare(e); if ( - clk_enable(e) + clk_prepare_enable(e) ) { ... - clk_unprepare(e); // unsafe! ... return ...; }
@@ expression e; statement S; @@
- clk_prepare(e); if ( - clk_enable(e) + clk_prepare_enable(e) ) S
@@ expression e,r2; identifier r1; statement S; @@
- r1 = clk_prepare(e); if (r1) S r2 = - clk_enable + clk_prepare_enable (e); if (r2) { ... - clk_unprepare(e); // unsafe! ... return ...; }
@@ expression e,r2; identifier r1; statement S; @@
- r1 = clk_prepare(e); if (r1) S r2 = - clk_enable + clk_prepare_enable (e);
@@ expression e; statement S1; @@
- if (clk_prepare(e)) S1 if ( - clk_enable + clk_prepare_enable (e)) { ... - clk_unprepare(e); // unsafe! ... return ...; }
@@ expression e; statement S1,S2; @@
- if (clk_prepare(e)) S1 if ( - clk_enable + clk_prepare_enable (e)) S2
@@ expression e; @@
- clk_disable(e); - clk_unprepare(e); + clk_disable_unprepare(e); // </smpl>
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