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drm/kms: allocate framebuffer cmap

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Without an allocated colormap, FBIOGETCMAP fails.  This would make
programs restore an all-black colormap ("links -g") or fail to work
altogether ("mplayer -vo fbdev2").

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Clemens Ladisch 2009-11-04 09:43:00 +01:00 committed by Dave Airlie
parent 7a654158bd
commit 3bea21b64c
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/drm_fb_helper.c
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@ -908,8 +908,13 @@ int drm_fb_helper_single_fb_probe(struct drm_device *dev,
if (new_fb) { if (new_fb) {
info->var.pixclock = 0; info->var.pixclock = 0;
if (register_framebuffer(info) < 0) ret = fb_alloc_cmap(&info->cmap, crtc->gamma_size, 0);
if (ret)
return ret;
if (register_framebuffer(info) < 0) {
fb_dealloc_cmap(&info->cmap);
return -EINVAL; return -EINVAL;
}
} else { } else {
drm_fb_helper_set_par(info); drm_fb_helper_set_par(info);
} }
@ -939,6 +944,7 @@ void drm_fb_helper_free(struct drm_fb_helper *helper)
unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
} }
drm_fb_helper_crtc_free(helper); drm_fb_helper_crtc_free(helper);
fb_dealloc_cmap(&helper->fb->fbdev->cmap);
} }
EXPORT_SYMBOL(drm_fb_helper_free); EXPORT_SYMBOL(drm_fb_helper_free);