8 files changed, 9 insertions, 9 deletions
diff --git a/src/mesa/drivers/dri/i830/i830_screen.c b/src/mesa/drivers/dri/i830/i830_screen.c
index af5049d629..4d47f16181 100644
--- a/src/mesa/drivers/dri/i830/i830_screen.c
+++ b/src/mesa/drivers/dri/i830/i830_screen.c
@@ -282,7 +282,7 @@ static GLboolean i830InitDriver(__DRIscreenPrivate *sPriv)
    }
 #endif
 
-   if ( glx_enable_extension == NULL ) {
+   if ( glx_enable_extension != NULL ) {
       (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
    }
 
diff --git a/src/mesa/drivers/dri/i915/intel_screen.c b/src/mesa/drivers/dri/i915/intel_screen.c
index f9c618e644..6c3f2f5774 100644
--- a/src/mesa/drivers/dri/i915/intel_screen.c
+++ b/src/mesa/drivers/dri/i915/intel_screen.c
@@ -195,7 +195,7 @@ static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
       }
    }
 
-   if (glx_enable_extension == NULL) {
+   if (glx_enable_extension != NULL) {
       (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
       (*glx_enable_extension)( psc, "GLX_MESA_allocate_memory" );
    }
diff --git a/src/mesa/drivers/dri/mach64/mach64_screen.c b/src/mesa/drivers/dri/mach64/mach64_screen.c
index e87c87c239..0bd8d6eb77 100644
--- a/src/mesa/drivers/dri/mach64/mach64_screen.c
+++ b/src/mesa/drivers/dri/mach64/mach64_screen.c
@@ -314,7 +314,7 @@ mach64CreateScreen( __DRIscreenPrivate *sPriv )
 
    mach64Screen->driScreen = sPriv;
 
-   if ( glx_enable_extension == NULL ) {
+   if ( glx_enable_extension != NULL ) {
       if ( mach64Screen->irq != 0 ) {
 	 (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 	 (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.c b/src/mesa/drivers/dri/mga/mga_xmesa.c
index cf3db99b93..1eb03ef0ec 100644
--- a/src/mesa/drivers/dri/mga/mga_xmesa.c
+++ b/src/mesa/drivers/dri/mga/mga_xmesa.c
@@ -229,7 +229,7 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
       }
    }
 
-   if ( glx_enable_extension == NULL ) {
+   if ( glx_enable_extension != NULL ) {
       (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
       (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
       (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
diff --git a/src/mesa/drivers/dri/r128/r128_screen.c b/src/mesa/drivers/dri/r128/r128_screen.c
index c1ec8cf621..52b9b7bcbc 100644
--- a/src/mesa/drivers/dri/r128/r128_screen.c
+++ b/src/mesa/drivers/dri/r128/r128_screen.c
@@ -214,7 +214,7 @@ r128CreateScreen( __DRIscreenPrivate *sPriv )
 
    r128Screen->driScreen = sPriv;
 
-   if ( glx_enable_extension == NULL ) {
+   if ( glx_enable_extension != NULL ) {
       if ( r128Screen->irq != 0 ) {
 	 (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 	 (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
diff --git a/src/mesa/drivers/dri/r200/r200_screen.c b/src/mesa/drivers/dri/r200/r200_screen.c
index e68f7dae8a..480ee64f00 100644
--- a/src/mesa/drivers/dri/r200/r200_screen.c
+++ b/src/mesa/drivers/dri/r200/r200_screen.c
@@ -463,7 +463,7 @@ r200CreateScreen( __DRIscreenPrivate *sPriv )
    screen->driScreen = sPriv;
    screen->sarea_priv_offset = dri_priv->sarea_priv_offset;
 
-   if ( glx_enable_extension == NULL ) {
+   if ( glx_enable_extension != NULL ) {
       if ( screen->irq != 0 ) {
 	 (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 	 (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
diff --git a/src/mesa/drivers/dri/r300/radeon_screen.c b/src/mesa/drivers/dri/r300/radeon_screen.c
index 466e6b0409..2893a9824c 100644
--- a/src/mesa/drivers/dri/r300/radeon_screen.c
+++ b/src/mesa/drivers/dri/r300/radeon_screen.c
@@ -582,7 +582,7 @@ static radeonScreenPtr radeonCreateScreen(__DRIscreenPrivate * sPriv)
 	screen->driScreen = sPriv;
 	screen->sarea_priv_offset = dri_priv->sarea_priv_offset;
 
-	if (glx_enable_extension == NULL) {
+	if (glx_enable_extension != NULL) {
 		if (screen->irq != 0) {
 			(*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 			(*glx_enable_extension) (psc, "GLX_SGI_video_sync");
@@ -597,7 +597,7 @@ static radeonScreenPtr radeonCreateScreen(__DRIscreenPrivate * sPriv)
 	sPriv->psc->freeMemory = (void *)r200FreeMemoryMESA;
 	sPriv->psc->memoryOffset = (void *)r200GetMemoryOffsetMESA;
 
-	if (glx_enable_extension == NULL) {
+	if (glx_enable_extension != NULL) {
 		(*glx_enable_extension) (psc, "GLX_MESA_allocate_memory");
 	}
 #endif
diff --git a/src/mesa/drivers/dri/unichrome/via_screen.c b/src/mesa/drivers/dri/unichrome/via_screen.c
index b718fd446a..924818c124 100644
--- a/src/mesa/drivers/dri/unichrome/via_screen.c
+++ b/src/mesa/drivers/dri/unichrome/via_screen.c
@@ -170,7 +170,7 @@ viaInitDriver(__DRIscreenPrivate *sPriv)
 
     viaScreen->sareaPrivOffset = gDRIPriv->sarea_priv_offset;
 
-    if ( glx_enable_extension == NULL ) {
+    if ( glx_enable_extension != NULL ) {
        if ( viaScreen->irqEnabled ) {
 	  (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 	  (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );