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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>
This commit is contained in:
Rajendra Nayak 2012-03-26 19:01:48 +05:30 committed by Mike Turquette
parent bffad66e31
commit 34e44fe874
1 changed files with 3 additions and 3 deletions
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6
drivers/clk/clk.c
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@ -285,7 +285,7 @@ unsigned long __clk_get_rate(struct clk *clk)
unsigned long ret; unsigned long ret;
if (!clk) { if (!clk) {
ret = -EINVAL; ret = 0;
goto out; goto out;
} }
@ -295,7 +295,7 @@ unsigned long __clk_get_rate(struct clk *clk)
goto out; goto out;
if (!clk->parent) if (!clk->parent)
ret = -ENODEV; ret = 0;
out: out:
return ret; return ret;
@ -560,7 +560,7 @@ EXPORT_SYMBOL_GPL(clk_enable);
* @clk: the clk whose rate is being returned * @clk: the clk whose rate is being returned
* *
* Simply returns the cached rate of the clk. Does not query the hardware. If * 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) unsigned long clk_get_rate(struct clk *clk)
{ {