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kmsdrm: Check for resources when validating KMSDRM device in check_mo…

…desetting.

Fixes Bugzilla #4403.
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serg-z committed Dec 1, 2018
1 parent b3ac87d commit 583f61b202ce4fa092367837ef9d724f0dcd3ebb
Showing with 8 additions and 1 deletion.
  1. +8 −1 src/video/kmsdrm/SDL_kmsdrmvideo.c
@@ -61,7 +61,13 @@ check_modestting(int devindex)
if (SDL_KMSDRM_LoadSymbols()) {
drmModeRes *resources = KMSDRM_drmModeGetResources(drm_fd);
if (resources != NULL) {
available = SDL_TRUE;
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "%scard%d connector, encoder and CRTC counts are: %d %d %d",
KMSDRM_DRI_PATH, devindex,
resources->count_connectors, resources->count_encoders, resources->count_crtcs);

if (resources->count_connectors > 0 && resources->count_encoders > 0 && resources->count_crtcs > 0) {
available = SDL_TRUE;
}
KMSDRM_drmModeFreeResources(resources);
}
SDL_KMSDRM_UnloadSymbols();
@@ -358,6 +364,7 @@ KMSDRM_VideoInit(_THIS)
ret = SDL_OutOfMemory();
goto cleanup;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Opening device /dev/dri/card%d", vdata->devindex);
SDL_snprintf(devname, 16, "/dev/dri/card%d", vdata->devindex);
vdata->drm_fd = open(devname, O_RDWR | O_CLOEXEC);
SDL_free(devname);

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