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[ARM] omap: allow double-registering of clocks

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This stops things blowing up if a 'struct clk' to be passed more
than once to clk_register(), which will be required when we decouple
struct clk's from their names.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-01-22 16:08:04 +00:00 committed by Russell King
parent 1e98ffa85e
commit dbb674d57b
1 changed files with 6 additions and 0 deletions
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6
arch/arm/plat-omap/clock.c
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@ -292,6 +292,12 @@ int clk_register(struct clk *clk)
if (clk == NULL || IS_ERR(clk))
return -EINVAL;
/*
* trap out already registered clocks
*/
if (clk->node.next || clk->node.prev)
return 0;
mutex_lock(&clocks_mutex);
list_add(&clk->node, &clocks);
if (clk->init)