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clk: at91: clk-generated: Limit the requested rate to our range

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[ Upstream commit af7651e67b ]

On clk_generated_determine_rate(), the requested rate could be outside
of clk's range. Limit the rate to the clock's range to not return an
error.

Fixes: df70aeef60 ("clk: at91: add generated clock driver")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20210707131213.3283509-1-codrin.ciubotariu@microchip.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Codrin Ciubotariu 2021-07-07 16:12:13 +03:00 committed by Greg Kroah-Hartman
parent 9bab2bc4c2
commit 6bf98b94ff
1 changed files with 6 additions and 0 deletions
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6
drivers/clk/at91/clk-generated.c
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@ -128,6 +128,12 @@ static int clk_generated_determine_rate(struct clk_hw *hw,
int i; int i;
u32 div; u32 div;
/* do not look for a rate that is outside of our range */
if (gck->range.max && req->rate > gck->range.max)
req->rate = gck->range.max;
if (gck->range.min && req->rate < gck->range.min)
req->rate = gck->range.min;
for (i = 0; i < clk_hw_get_num_parents(hw); i++) { for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
if (gck->chg_pid == i) if (gck->chg_pid == i)
continue; continue;