diff options
| author | Codrin Ciubotariu <codrin.ciubotariu@microchip.com> | 2022-04-13 10:13:18 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2022-05-17 12:41:07 -0700 |
| commit | d0031e6fbed955ff8d5f5bbc8fe7382482559cec (patch) | |
| tree | e2b48cf69a42db8f3559554e68d63ac4c3cf9a62 | |
| parent | 60d9f050da63b71392810af9b69ca8de6d23a17a (diff) | |
clk: at91: generated: consider range when calculating best rate
clk_generated_best_diff() helps in finding the parent and the divisor to
compute a rate closest to the required one. However, it doesn't take into
account the request's range for the new rate. Make sure the new rate
is within the required range.
Fixes: 8a8f4bf0c480 ("clk: at91: clk-generated: create function to find best_diff")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220413071318.244912-1-codrin.ciubotariu@microchip.com
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
| -rw-r--r-- | drivers/clk/at91/clk-generated.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c index 23cc8297ec4c..d429ba52a719 100644 --- a/drivers/clk/at91/clk-generated.c +++ b/drivers/clk/at91/clk-generated.c @@ -117,6 +117,10 @@ static void clk_generated_best_diff(struct clk_rate_request *req, tmp_rate = parent_rate; else tmp_rate = parent_rate / div; + + if (tmp_rate < req->min_rate || tmp_rate > req->max_rate) + return; + tmp_diff = abs(req->rate - tmp_rate); if (*best_diff < 0 || *best_diff >= tmp_diff) { |