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| 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License version 2 as |
| 4 | * published by the Free Software Foundation. |
| 5 | */ |
| 6 | |
| 7 | #include <linux/clk.h> |
| 8 | #include <linux/device.h> |
| 9 | #include <linux/export.h> |
| 10 | #include <linux/gfp.h> |
| 11 | |
| 12 | static void devm_clk_release(struct device *dev, void *res) |
| 13 | { |
| 14 | clk_put(*(struct clk **)res); |
| 15 | } |
| 16 | |
| 17 | struct clk *devm_clk_get(struct device *dev, const char *id) |
| 18 | { |
| 19 | struct clk **ptr, *clk; |
| 20 | |
| 21 | ptr = devres_alloc(devm_clk_release, sizeof(*ptr), GFP_KERNEL); |
| 22 | if (!ptr) |
| 23 | return ERR_PTR(-ENOMEM); |
| 24 | |
| 25 | clk = clk_get(dev, id); |
| 26 | if (!IS_ERR(clk)) { |
| 27 | *ptr = clk; |
| 28 | devres_add(dev, ptr); |
| 29 | } else { |
| 30 | devres_free(ptr); |
| 31 | } |
| 32 | |
| 33 | return clk; |
| 34 | } |
| 35 | EXPORT_SYMBOL(devm_clk_get); |
| 36 | |
| 37 | static int devm_clk_match(struct device *dev, void *res, void *data) |
| 38 | { |
| 39 | struct clk **c = res; |
| 40 | if (!c || !*c) { |
| 41 | WARN_ON(!c || !*c); |
| 42 | return 0; |
| 43 | } |
| 44 | return *c == data; |
| 45 | } |
| 46 | |
| 47 | void devm_clk_put(struct device *dev, struct clk *clk) |
| 48 | { |
| 49 | int ret; |
| 50 | |
| 51 | ret = devres_release(dev, devm_clk_release, devm_clk_match, clk); |
| 52 | |
| 53 | WARN_ON(ret); |
| 54 | } |
| 55 | EXPORT_SYMBOL(devm_clk_put); |
| 56 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
