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* [PATCH] clk: bail out early when rate is already desired one
@ 2021-06-07 14:12 Sascha Hauer
  2021-06-07 15:46 ` Ahmad Fatoum
  0 siblings, 1 reply; 3+ messages in thread
From: Sascha Hauer @ 2021-06-07 14:12 UTC (permalink / raw)
  To: Barebox List

Return successfully from clk_set_rate() when the rate is already the
desired one. This prevents a failure in clk_set_rate() when the current
clock doesn't have a set_rate hook.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/clk/clk.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 8b90f30486..ba726c342c 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -169,6 +169,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
+	if (clk_get_rate(clk) == clk_round_rate(clk, rate))
+		return 0;
+
 	if (!clk->ops->set_rate)
 		return -ENOSYS;
 
-- 
2.29.2


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^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-06-16  8:31 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-06-07 14:12 [PATCH] clk: bail out early when rate is already desired one Sascha Hauer
2021-06-07 15:46 ` Ahmad Fatoum
2021-06-16  8:29   ` Sascha Hauer

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