From: Rajendra Nayak <rnayak@ti.com>
Date: Mon, 26 Mar 2012 13:31:48 +0000 (+0530)
Subject: clk: Make clk_get_rate() return 0 on error
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=34e44fe87437b6a5aad856f15f7a849e5fc137aa;p=~shefty%2Frdma-dev.git

clk: Make clk_get_rate() return 0 on error

Most users of clk_get_rate() actually assume a non zero
return value as a valid rate returned. Returing -EINVAL
might confuse such users, so make it instead return zero
on error.

Besides the return value of clk_get_rate seems to be
'unsigned long'.

Signed-off-by: Rajendra nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
---

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 9924aec17aa..a24b121747a 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -285,7 +285,7 @@ unsigned long __clk_get_rate(struct clk *clk)
 	unsigned long ret;
 
 	if (!clk) {
-		ret = -EINVAL;
+		ret = 0;
 		goto out;
 	}
 
@@ -295,7 +295,7 @@ unsigned long __clk_get_rate(struct clk *clk)
 		goto out;
 
 	if (!clk->parent)
-		ret = -ENODEV;
+		ret = 0;
 
 out:
 	return ret;
@@ -560,7 +560,7 @@ EXPORT_SYMBOL_GPL(clk_enable);
  * @clk: the clk whose rate is being returned
  *
  * Simply returns the cached rate of the clk.  Does not query the hardware.  If
- * clk is NULL then returns -EINVAL.
+ * clk is NULL then returns 0.
  */
 unsigned long clk_get_rate(struct clk *clk)
 {