linux-kernel - [PATCH 13/15] amba-clcd: fix cmap memory leaks

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Message-ID: <20090207121848.536b136d@ephemeral>
Date:	Sat, 7 Feb 2009 12:18:48 -0500
From:	Andres Salomon <dilinger@...ued.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	linux-fbdev-devel@...ts.sourceforge.net, adaplas@...il.com
Subject: [PATCH 13/15] amba-clcd: fix cmap memory leaks


 - fix cmap leak in removal path
 - fix cmap leak when register_framebuffer fails

Signed-off-by: Andres Salomon <dilinger@...ian.org>
---
 drivers/video/amba-clcd.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 4e046fe..61050ab 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -408,7 +408,9 @@ static int clcdfb_register(struct clcd_fb *fb)
 	/*
 	 * Allocate colourmap.
 	 */
-	fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+	ret = fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+	if (ret)
+		goto unmap;
 
 	/*
 	 * Ensure interrupts are disabled.
@@ -426,6 +428,8 @@ static int clcdfb_register(struct clcd_fb *fb)
 
 	printk(KERN_ERR "CLCD: cannot register framebuffer (%d)\n", ret);
 
+	fb_dealloc_cmap(&fb->fb.cmap);
+ unmap:
 	iounmap(fb->regs);
  free_clk:
 	clk_put(fb->clk);
@@ -485,6 +489,8 @@ static int clcdfb_remove(struct amba_device *dev)
 
 	clcdfb_disable(fb);
 	unregister_framebuffer(&fb->fb);
+	if (fb->fb.cmap.len)
+		fb_dealloc_cmap(&fb->fb.cmap);
 	iounmap(fb->regs);
 	clk_put(fb->clk);
 
-- 
1.5.6.5

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