clk: fix clk_get_rate() documentation

Improve clk_get_rate() @return documentation that otherwise is a bit
ambiguous. At the moment I expect to return 0 as error since the return
type is 'ulong', instead the function really returns negative value in
case the corresponding function pointer is null and returns 0 if the clock
is invalid.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Giulio Benetti 2021-02-14 03:17:18 +01:00 committed by Sean Anderson
parent ade37460a9
commit 9e578f6340

View file

@ -389,7 +389,8 @@ int clk_free(struct clk *clk);
*
* @clk: A clock struct that was previously successfully requested by
* clk_request/get_by_*().
* @return clock rate in Hz, or -ve error code.
* @return clock rate in Hz on success, 0 for invalid clock, or -ve error code
* for other errors.
*/
ulong clk_get_rate(struct clk *clk);