From 538a1af90de28feefce7a31a99c1cec8599cf181 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Wed, 11 Apr 2012 16:03:42 +0530 Subject: [PATCH] clk: clk_set_rate() must fail if CLK_SET_RATE_GATE is set and clk is enabled This is well documented but isn't implemented. clk_set_rate() must check if flags have CLK_SET_RATE_GATE bit set and is enabled too. Signed-off-by: Viresh Kumar Signed-off-by: Mike Turquette --- drivers/clk/clk.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index c81803b9ba357..8149764f8438f 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -900,6 +900,11 @@ int clk_set_rate(struct clk *clk, unsigned long rate) if (rate == clk->rate) goto out; + if ((clk->flags & CLK_SET_RATE_GATE) && __clk_is_enabled(clk)) { + ret = -EBUSY; + goto out; + } + /* calculate new rates and get the topmost changed clock */ top = clk_calc_new_rates(clk, rate); if (!top) { -- 2.39.5