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[AVR32] Warn, don't BUG if clk_disable is called too many times 

Print a helpful warning along with a stack dump if clk_disable is
called on a already-disabled clock. Remove the BUG_ON().

Extracted from a patch by David Brownell.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
Haavard Skinnemoen 2007-02-16 13:19:47 +01:00
parent 7a5fe23879
commit 23cebe2287
1 changed files with 5 additions and 1 deletions
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6
arch/avr32/mach-at32ap/clock.c
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@ -63,7 +63,11 @@ EXPORT_SYMBOL(clk_enable);
static void __clk_disable(struct clk *clk) static void __clk_disable(struct clk *clk)
{ {
BUG_ON(clk->users == 0); if (clk->users == 0) {
printk(KERN_ERR "%s: mismatched disable\n", clk->name);
WARN_ON(1);
return;
}
if (--clk->users == 0 && clk->mode) if (--clk->users == 0 && clk->mode)
clk->mode(clk, 0); clk->mode(clk, 0);