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Add write posting protection for the SDVO DPMS-on path.

This commit is contained in:
Eric Anholt 2007-03-13 10:08:57 -07:00
parent 9d30f00072
commit cf33abe43b
1 changed files with 2 additions and 0 deletions
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2
src/i830_sdvo.c
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@ -695,12 +695,14 @@ i830_sdvo_dpms(xf86OutputPtr output, int mode)
if ((temp & SDVO_ENABLE) == 0)
{
OUTREG(dev_priv->output_device, temp | SDVO_ENABLE);
(void)INREG(dev_priv->output_device);
#if 0
/* Do it again! If we remove this below register write, or the exact
* same one 2 lines up, the mac mini SDVO output doesn't turn on.
*/
OUTREG(dev_priv->output_device,
INREG(dev_priv->output_device) | SDVO_ENABLE);
(void)INREG(dev_priv->output_device);
#endif
}
for (i = 0; i < 2; i++)