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os-support/solaris: Drop ExtendedEnabled global variable 

Keeping track of kernel state in user space doesn't buy us anything,
and introduces bugs, as we were keeping global state but the Solaris
kernel tracks IOPL per thread.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Alan Coopersmith 2019-02-21 14:51:22 -08:00 committed by Adam Jackson
parent 432fad04e7
commit 7533fa9bd5
1 changed files with 0 additions and 13 deletions
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13
hw/xfree86/os-support/solaris/sun_vid.c
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@ -73,22 +73,14 @@ xf86OSInitVidMem(VidMemInfoPtr pVidMem)
/* I/O Permissions section */
/***************************************************************************/
#if defined(__i386__) || defined(__i386) || defined(__x86)
static Bool ExtendedEnabled = FALSE;
#endif
Bool
xf86EnableIO(void)
{
#if defined(__i386__) || defined(__i386) || defined(__x86)
if (ExtendedEnabled)
return TRUE;
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
xf86Msg(X_WARNING, "xf86EnableIOPorts: Failed to set IOPL for I/O\n");
return FALSE;
}
ExtendedEnabled = TRUE;
#endif /* i386 */
return TRUE;
}
@ -97,11 +89,6 @@ void
xf86DisableIO(void)
{
#if defined(__i386__) || defined(__i386) || defined(__x86)
if (!ExtendedEnabled)
return;
sysi86(SI86V86, V86SC_IOPL, 0);
ExtendedEnabled = FALSE;
#endif /* i386 */
}