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present: Check for NULL to prevent crash 

Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1275
Signed-off-by: Błażej Szczygieł <spaz16@wp.pl>
Tested-by: Aaron Plattner <aplattner@nvidia.com>
This commit is contained in:
Błażej Szczygieł 2022-01-13 00:47:27 +01:00 committed by Aaron Plattner
parent d1f26c3e75
commit 22d5818851
1 changed files with 6 additions and 0 deletions
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6
present/present_scmd.c
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@ -158,6 +158,9 @@ present_scmd_get_crtc(present_screen_priv_ptr screen_priv, WindowPtr window)
if (!screen_priv->info) if (!screen_priv->info)
return NULL; return NULL;
if (!screen_priv->info->get_crtc)
return NULL;
return (*screen_priv->info->get_crtc)(window); return (*screen_priv->info->get_crtc)(window);
} }
@ -196,6 +199,9 @@ present_flush(WindowPtr window)
if (!screen_priv->info) if (!screen_priv->info)
return; return;
if (!screen_priv->info->flush)
return;
(*screen_priv->info->flush) (window); (*screen_priv->info->flush) (window);
} }