[PATCH] ioremap balanced with iounmap for drivers/video/macfb

ioremap must be balanced by an iounmap and failing to do so can result in a
memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/video/macfb.c b/drivers/video/macfb.c
index 80a043807161..180d94c2b4d2 100644
--- a/drivers/video/macfb.c
+++ b/drivers/video/macfb.c
@@ -608,6 +608,22 @@ void __init macfb_setup(char *options)
         }
 }
 
+static void __init iounmap_macfb(void)
+{
+        if (valkyrie_cmap_regs)
+                iounmap(valkyrie_cmap_regs);
+        if (dafb_cmap_regs)
+                iounmap(dafb_cmap_regs);
+        if (v8_brazil_cmap_regs)
+                iounmap(v8_brazil_cmap_regs);
+        if (rbv_cmap_regs)
+                iounmap(rbv_cmap_regs);
+        if (civic_cmap_regs)
+                iounmap(civic_cmap_regs);
+        if (csc_cmap_regs)
+                iounmap(csc_cmap_regs);
+}
+
 static int __init macfb_init(void)
 {
         int video_cmap_len, video_is_nubus = 0;
@@ -962,6 +978,10 @@ static int __init macfb_init(void)
         if (!err)
                 printk("fb%d: %s frame buffer device\n",
                        fb_info.node, fb_info.fix.id);
+        else {
+                iounmap(fb_info.screen_base);
+                iounmap_macfb();
+        }
         return err;
 }