diff options
| author |   Codrin Ciubotariu <codrin.ciubotariu@microchip.com> | 2021-07-07 16:12:13 +0300 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2021-08-28 22:28:24 -0700 |
| commit | af7651e67b9d5f7e63ea23b118e3672ac662244a (patch) | |
| tree | 864aa065666f13f85b8eec0a0adf0ee3d67fd2f4 /drivers/clk/at91 | |
| parent | Linux 5.14-rc1 (diff) | |
| download | wireguard-linux-af7651e67b9d5f7e63ea23b118e3672ac662244a.tar.xz wireguard-linux-af7651e67b9d5f7e63ea23b118e3672ac662244a.zip | |
clk: at91: clk-generated: Limit the requested rate to our range
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>
Diffstat (limited to 'drivers/clk/at91')
| -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; |