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Do nothing if requested clk frequency is already correct.

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Reviewed by: mmel
This commit is contained in:
kan 2016-03-27 23:19:20 +00:00
parent 2874cb104b
commit 9ae637599c
1 changed files with 4 additions and 0 deletions
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4
sys/dev/extres/clk/clk.c
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@ -818,6 +818,10 @@ clknode_set_freq(struct clknode *clknode, uint64_t freq, int flags,
/* We have exclusive topology lock, node lock is not needed. */
CLK_TOPO_XASSERT();
/* Check for no change */
if (clknode->freq == freq)
return (0);
parent_freq = 0;
/*