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Fix IsXtstDevice - returns false positives since 0814f511d5.

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Missing check for the value of 'mid' returned false positives if master was
NULL.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2009-07-03 09:18:57 +10:00
parent 3525d14056
commit 50a2a8dc76
1 changed files with 9 additions and 2 deletions
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11
dix/devices.c
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@ -2625,16 +2625,23 @@ int AllocXtstDevice (ClientPtr client, char* name,
BOOL BOOL
IsXtstDevice(DeviceIntPtr dev, DeviceIntPtr master) IsXtstDevice(DeviceIntPtr dev, DeviceIntPtr master)
{ {
int is_xtst = FALSE;
int mid; int mid;
void *tmp; /* shut up, gcc! */ void *tmp; /* shut up, gcc! */
if (IsMaster(dev)) if (IsMaster(dev))
return FALSE; return is_xtst;
tmp = dixLookupPrivate(&dev->devPrivates, XTstDevicePrivateKey); tmp = dixLookupPrivate(&dev->devPrivates, XTstDevicePrivateKey);
mid = (int)tmp; mid = (int)tmp;
return (!master || mid == master->id); /* deviceid 0 is reserved for XIAllDevices, non-zero mid means xtst
* device */
if ((!master && mid) ||
(master && mid == master->id))
is_xtst = TRUE;
return is_xtst;
} }
/** /**