linux-kernel - [024/116] efifb: fix framebuffer handoff

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Date:	Tue, 30 Mar 2010 15:55:02 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Marcin Slusarz <marcin.slusarz@...il.com>,
	Peter Jones <pjones@...hat.com>,
	Huang Ying <ying.huang@...el.com>,
	Dave Airlie <airlied@...hat.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, maximilian attems <max@...o.at>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [024/116] efifb: fix framebuffer handoff

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Marcin Slusarz <marcin.slusarz@...il.com>

commit 89f3f2199084a160a3a45fa6d9af235696321758 upstream.

Commit 4410f3910947dcea8672280b3adecd53cec4e85e ("fbdev: add support for
handoff from firmware to hw framebuffers") didn't add fb_destroy
operation to efifb.  Fix it and change aperture_size to match size
passed to request_mem_region.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15151

Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
Reported-by: Alex Zhavnerchik <alex.vizor@...il.com>
Tested-by: Alex Zhavnerchik <alex.vizor@...il.com>
Acked-by: Peter Jones <pjones@...hat.com>
Cc: Huang Ying <ying.huang@...el.com>
Cc: Dave Airlie <airlied@...hat.com>
Cc: "Rafael J. Wysocki" <rjw@...k.pl>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: maximilian attems <max@...o.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/video/efifb.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- a/drivers/video/efifb.c
+++ b/drivers/video/efifb.c
@@ -161,8 +161,17 @@ static int efifb_setcolreg(unsigned regn
 	return 0;
 }

+static void efifb_destroy(struct fb_info *info)
+{
+	if (info->screen_base)
+		iounmap(info->screen_base);
+	release_mem_region(info->aperture_base, info->aperture_size);
+	framebuffer_release(info);
+}
+
 static struct fb_ops efifb_ops = {
 	.owner		= THIS_MODULE,
+	.fb_destroy	= efifb_destroy,
 	.fb_setcolreg	= efifb_setcolreg,
 	.fb_fillrect	= cfb_fillrect,
 	.fb_copyarea	= cfb_copyarea,
@@ -281,7 +290,7 @@ static int __init efifb_probe(struct pla
 	info->par = NULL;

 	info->aperture_base = efifb_fix.smem_start;
-	info->aperture_size = size_total;
+	info->aperture_size = size_remap;

 	info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
 	if (!info->screen_base) {

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