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modesetting: simplify bailing on calloc fail 

The "done" label restores crtc-> {x,y,rotation,mode}, frees output_id.
Doing the calloc() before writing to those values frees us from
necessity to restore them if calloc fails, and allows to merge
"if (mode)" block.

Signed-off-by: Konstantin Kharlamov <Hi-Angel@yandex.ru>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Konstantin Kharlamov 2017-12-17 23:23:02 +03:00 committed by Peter Hutterer
parent c2954b16c8
commit c720495305
1 changed files with 4 additions and 8 deletions
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12
hw/xfree86/drivers/modesetting/drmmode_display.c
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@ -595,6 +595,10 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
uint32_t fb_id = 0;
drmModeModeInfo kmode;
output_ids = calloc(sizeof(uint32_t), xf86_config->num_output);
if (!output_ids)
return FALSE;
saved_mode = crtc->mode;
saved_x = crtc->x;
saved_y = crtc->y;
@ -605,15 +609,7 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
crtc->x = x;
crtc->y = y;
crtc->rotation = rotation;
}
output_ids = calloc(sizeof(uint32_t), xf86_config->num_output);
if (!output_ids) {
ret = FALSE;
goto done;
}
if (mode) {
for (i = 0; i < xf86_config->num_output; i++) {
xf86OutputPtr output = xf86_config->output[i];
drmmode_output_private_ptr drmmode_output;