From: Codrin Ciubotariu <codrin.ciubotariu@xxxxxxxxxxxxx>
[ Upstream commit af7651e67b9d5f7e63ea23b118e3672ac662244a ]
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: df70aeef6083 ("clk: at91: add generated clock driver")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210707131213.3283509-1-codrin.ciubotariu@xxxxxxxxxxxxx
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/clk/at91/clk-generated.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
index 273d0447d727..d7fe1303f79d 100644
--- a/drivers/clk/at91/clk-generated.c
+++ b/drivers/clk/at91/clk-generated.c
@@ -127,6 +127,12 @@ static int clk_generated_determine_rate(struct clk_hw *hw,
int i;
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++) {
if (gck->chg_pid == i)
continue;
--
2.30.2
