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OMAPDSS: DISPC: use WARN_ON() in dispc_mgr_go 

dispc_mgr_go() should never be called with manager output disabled or if
the GO bit is already set. Change the current silent returns to
WARN_ONs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2012-10-19 15:06:07 +03:00
parent 916188a466
commit 3c91ee8cc9
1 changed files with 2 additions and 14 deletions
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16
drivers/video/omap2/dss/dispc.c
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@ -569,20 +569,8 @@ bool dispc_mgr_go_busy(enum omap_channel channel)
void dispc_mgr_go(enum omap_channel channel)
{
bool enable_bit, go_bit;
/* if the channel is not enabled, we don't need GO */
enable_bit = mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE) == 1;
if (!enable_bit)
return;
go_bit = mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1;
if (go_bit) {
DSSERR("GO bit not down for channel %d\n", channel);
return;
}
WARN_ON(dispc_mgr_is_enabled(channel) == false);
WARN_ON(dispc_mgr_go_busy(channel));
DSSDBG("GO %s\n", mgr_desc[channel].name);