linux-kernel - [PATCH 3/3] drm/i915: allocate framebuffer cmap

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Date:	Mon, 02 Nov 2009 08:42:39 +0100
From:	Clemens Ladisch <clemens@...isch.de>
To:	Dave Airlie <airlied@...hat.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Eric Anholt <eric@...olt.net>
CC:	dri-devel@...ts.sourceforge.net,
	linux-fbdev-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] drm/i915: allocate framebuffer cmap

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@...isch.de>
---
Untested.

--- linux-2.6/drivers/gpu/drm/i915/intel_fb.c
+++ linux-2.6/drivers/gpu/drm/i915/intel_fb.c
@@ -227,6 +227,10 @@ static int intelfb_create(struct drm_dev
 
 	fb->fbdev = info;
 
+	ret = fb_alloc_cmap(&info->cmap, 256, 0);
+	if (ret)
+		goto out_unpin;
+
 	par->intel_fb = intel_fb;
 
 	/* To allow resizeing without swapping buffers */
@@ -270,6 +274,7 @@ int intelfb_remove(struct drm_device *de
 		iounmap(info->screen_base);
 		if (info->par)
 			drm_fb_helper_free(&par->helper);
+		fb_dealloc_cmap(&info->cmap);
 		framebuffer_release(info);
 	}
 

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