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path: root/drivers/clk/clkdev.c
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Diffstat (limited to 'drivers/clk/clkdev.c')
-rw-r--r--drivers/clk/clkdev.c59
1 files changed, 27 insertions, 32 deletions
diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 29a1ab7af4b8..043fd3633373 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -29,6 +29,20 @@ static DEFINE_MUTEX(clocks_mutex);
#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
+static struct clk *__of_clk_get_by_clkspec(struct of_phandle_args *clkspec,
+ const char *dev_id, const char *con_id)
+{
+ struct clk *clk;
+
+ if (!clkspec)
+ return ERR_PTR(-EINVAL);
+
+ of_clk_lock();
+ clk = __of_clk_get_from_provider(clkspec, dev_id, con_id);
+ of_clk_unlock();
+ return clk;
+}
+
/**
* of_clk_get_by_clkspec() - Lookup a clock form a clock provider
* @clkspec: pointer to a clock specifier data structure
@@ -39,22 +53,11 @@ static DEFINE_MUTEX(clocks_mutex);
*/
struct clk *of_clk_get_by_clkspec(struct of_phandle_args *clkspec)
{
- struct clk *clk;
-
- if (!clkspec)
- return ERR_PTR(-EINVAL);
-
- of_clk_lock();
- clk = __of_clk_get_from_provider(clkspec);
-
- if (!IS_ERR(clk) && !__clk_get(clk))
- clk = ERR_PTR(-ENOENT);
-
- of_clk_unlock();
- return clk;
+ return __of_clk_get_by_clkspec(clkspec, NULL, __func__);
}
-static struct clk *__of_clk_get(struct device_node *np, int index)
+static struct clk *__of_clk_get(struct device_node *np, int index,
+ const char *dev_id, const char *con_id)
{
struct of_phandle_args clkspec;
struct clk *clk;
@@ -68,7 +71,7 @@ static struct clk *__of_clk_get(struct device_node *np, int index)
if (rc)
return ERR_PTR(rc);
- clk = of_clk_get_by_clkspec(&clkspec);
+ clk = __of_clk_get_by_clkspec(&clkspec, dev_id, con_id);
of_node_put(clkspec.np);
return clk;
@@ -76,12 +79,7 @@ static struct clk *__of_clk_get(struct device_node *np, int index)
struct clk *of_clk_get(struct device_node *np, int index)
{
- struct clk *clk = __of_clk_get(np, index);
-
- if (!IS_ERR(clk))
- clk = __clk_create_clk(__clk_get_hw(clk), np->full_name, NULL);
-
- return clk;
+ return __of_clk_get(np, index, np->full_name, NULL);
}
EXPORT_SYMBOL(of_clk_get);
@@ -102,12 +100,10 @@ static struct clk *__of_clk_get_by_name(struct device_node *np,
*/
if (name)
index = of_property_match_string(np, "clock-names", name);
- clk = __of_clk_get(np, index);
+ clk = __of_clk_get(np, index, dev_id, name);
if (!IS_ERR(clk)) {
- clk = __clk_create_clk(__clk_get_hw(clk), dev_id, name);
break;
- }
- else if (name && index >= 0) {
+ } else if (name && index >= 0) {
if (PTR_ERR(clk) != -EPROBE_DEFER)
pr_err("ERROR: could not get clock %s:%s(%i)\n",
np->full_name, name ? name : "", index);
@@ -209,17 +205,16 @@ struct clk *clk_get_sys(const char *dev_id, const char *con_id)
if (!cl)
goto out;
- if (!__clk_get(cl->clk)) {
+ clk = __clk_create_clk(__clk_get_hw(cl->clk), dev_id, con_id);
+ if (IS_ERR(clk))
+ goto out;
+
+ if (!__clk_get(clk)) {
+ __clk_free_clk(clk);
cl = NULL;
goto out;
}
-#if defined(CONFIG_COMMON_CLK)
- clk = __clk_create_clk(__clk_get_hw(cl->clk), dev_id, con_id);
-#else
- clk = cl->clk;
-#endif
-
out:
mutex_unlock(&clocks_mutex);