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clk: clk_set_rate() must fail if CLK_SET_RATE_GATE is set and clk is enabled

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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 <viresh.kumar@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Viresh Kumar 2012-04-11 16:03:42 +05:30 • committed by Mike Turquette
parent 0197b3ea0f
commit 0e1c030175
1 changed files with 5 additions and 0 deletions
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5
drivers/clk/clk.c
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@ -900,6 +900,11 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
if (rate == clk->rate) if (rate == clk->rate)
goto out; 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 */ /* calculate new rates and get the topmost changed clock */
top = clk_calc_new_rates(clk, rate); top = clk_calc_new_rates(clk, rate);
if (!top) { if (!top) {