[PATCH v2 3/3] drm/kms: allocate framebuffer cmap
From: Clemens Ladisch <clemens@ladisch.de>
Date: 2009-11-03 12:20:14
Also in:
lkml
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>
---
v2: implemented suggestions by James Simmons
drivers/gpu/drm/drm_fb_helper.c | 4 ++++
1 file changed, 4 insertions(+)
--- linux-2.6/drivers/gpu/drm/drm_fb_helper.c
+++ linux-2.6/drivers/gpu/drm/drm_fb_helper.c@@ -905,6 +905,9 @@ int drm_fb_helper_single_fb_probe(struct if (new_fb) { info->var.pixclock = 0; + ret = fb_alloc_cmap(&info->cmap, crtc->gamma_size, 0); + if (ret) + return ret; if (register_framebuffer(info) < 0) return -EINVAL; } else {
@@ -936,6 +939,7 @@ void drm_fb_helper_free(struct drm_fb_he unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); } drm_fb_helper_crtc_free(helper); + fb_dealloc_cmap(&helper->fb->fbdev->cmap); } EXPORT_SYMBOL(drm_fb_helper_free);