Commit 25f1c96a authored by Chuan Liu's avatar Chuan Liu Committed by Stephen Boyd
Browse files

clk: Fix invalid execution of clk_set_rate 



Some clocks have rates that can be changed elsewhere, so add a flag
CLK_GET_RATE_NOCACHE(such as scmi_clk) to these clocks to ensure that
the real-time rate is obtained.

When clk_set_rate is called, it is returned if the request to set rate
is consistent with the current rate. Getting the current rate in
clk_set_rate returns the rate stored in clk_core. CLK_GET_RATE_NOCACHE
does not take effect here.

Signed-off-by: default avatarChuan Liu <chuan.liu@amlogic.com>
Link: https://lore.kernel.org/r/20240910-fix_clk-v1-1-111443baaeaa@amlogic.com


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 6e4bf018

drivers/clk/clk.c

+1 −1
Original line number Diff line number Diff line
@@ -2530,7 +2530,7 @@ static int clk_core_set_rate_nolock(struct clk_core *core, 
	rate = clk_core_req_round_rate_nolock(core, req_rate);



	/* bail early if nothing to do */

	if (rate == clk_core_get_rate_nolock(core))

	if (rate == clk_core_get_rate_recalc(core))

		return 0;



	/* fail on a direct rate set of a protected provider */