clk: ingenic/TCU: Fix round_rate returning error

commit edcc42945dee85e9dec3737f3dbf59d917ae5418 upstream.

When requesting a rate superior to the parent's rate, it would return
-EINVAL instead of simply returning the parent's rate like it should.

Fixes: 4f89e4b8f121 ("clk: ingenic: Add driver for the TCU clocks")
Cc: stable@vger.kernel.org
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lkml.kernel.org/r/20200213161952.37460-2-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/clk/ingenic/tcu.c b/drivers/clk/ingenic/tcu.c
index ad7daa494fd4a6c5acc0c6542a739b75442eab94..cd537c3db7824e6a9d8842769a63969365bcf988 100644 (file)
--- a/drivers/clk/ingenic/tcu.c
+++ b/drivers/clk/ingenic/tcu.c
@@ -189,7 +189,7 @@ static long ingenic_tcu_round_rate(struct clk_hw *hw, unsigned long req_rate,
        u8 prescale;
 
        if (req_rate > rate)
-               return -EINVAL;
+               return rate;
 
        prescale = ingenic_tcu_get_prescale(rate, req_rate);