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OMAP: hwmod: Do not disable clocks if hwmod already in idle 

The disable function was disabling clocks and dependencies
from both enable and idle state. Since idle function is already
disabling both, an enable -> idle -> disable sequence will
try to disable twice the clocks and thus generate a
"Trying disable clock XXX with 0 usecount" warning.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Benoit Cousson 2010-09-21 10:34:08 -06:00 committed by Paul Walmsley
parent 9ee9fff92e
commit 3827f9492b
1 changed files with 7 additions and 3 deletions
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10
arch/arm/mach-omap2/omap_hwmod.c
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@ -982,9 +982,13 @@ static int _shutdown(struct omap_hwmod *oh)
if (oh->class->sysc)
_sysc_shutdown(oh);
_del_initiator_dep(oh, mpu_oh);
/* XXX what about the other system initiators here? DMA, tesla, d2d */
_disable_clocks(oh);
/* clocks and deps are already disabled in idle */
if (oh->_state == _HWMOD_STATE_ENABLED) {
_del_initiator_dep(oh, mpu_oh);
/* XXX what about the other system initiators here? dma, dsp */
_disable_clocks(oh);
}
/* XXX Should this code also force-disable the optional clocks? */
/* XXX mux any associated balls to safe mode */