diff options
| author | Codrin Ciubotariu <codrin.ciubotariu@microchip.com> | 2021-07-07 16:12:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-18 14:40:16 +0300 |
| commit | 6bf98b94ffeb4dea48b288d874e6be8ecba36191 (patch) | |
| tree | ca0c10bc3ce930cfe5f13f948f66ba7875577224 /drivers/clk | |
| parent | 9bab2bc4c238ca5a2faeb26db03808d95784a204 (diff) | |
| download | linux-6bf98b94ffeb4dea48b288d874e6be8ecba36191.tar.xz | |
clk: at91: clk-generated: Limit the requested rate to our range
[ 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@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>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/at91/clk-generated.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c index b4fc8d71daf2..b656d25a9767 100644 --- a/drivers/clk/at91/clk-generated.c +++ b/drivers/clk/at91/clk-generated.c @@ -128,6 +128,12 @@ 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; |