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Better fix for xf86CompatOut() when there are no privates 

XF86_CRTC_CONFIG_PTR() will derefence privates[-1] in this case.

Signed-off-by: Matthieu Herrb <matthieu@herrb.eu>
This commit is contained in:
Matthieu Herrb 2021-12-05 21:59:12 +01:00 committed by Povilas Kanapickas
parent ed11c4d443
commit 75d7061288
1 changed files with 2 additions and 2 deletions
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4
hw/xfree86/modes/xf86Crtc.h
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@ -837,11 +837,11 @@ extern _X_EXPORT int xf86CrtcConfigPrivateIndex;
static _X_INLINE xf86OutputPtr
xf86CompatOutput(ScrnInfoPtr pScrn)
{
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
xf86CrtcConfigPtr config;
if (xf86CrtcConfigPrivateIndex == -1)
return NULL;
config = XF86_CRTC_CONFIG_PTR(pScrn);
if (config->compat_output < 0)
return NULL;
return config->output[config->compat_output];