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

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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/video/amifb.c b/drivers/video/amifb.c
index a4e3fca..88a4784 100644 (file)
--- a/drivers/video/amifb.c
+++ b/drivers/video/amifb.c
@@ -2407,10 +2407,10 @@ default_chipset:
                                                   fb_info.fix.smem_len);
        if (!videomemory) {
                printk("amifb: WARNING! unable to map videomem cached writethrough\n");
-               videomemory = ZTWO_VADDR(fb_info.fix.smem_start);
-       }
+               fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
+       } else
+               fb_info.screen_base = (char *)videomemory;
 
-       fb_info.screen_base = (char *)videomemory;
        memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
 
        /*
@@ -2453,6 +2453,8 @@ static void amifb_deinit(void)
 {
        fb_dealloc_cmap(&fb_info.cmap);
        chipfree();
+       if (videomemory)
+               iounmap((void*)videomemory);
        release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
        custom.dmacon = DMAF_ALL | DMAF_MASTER;
 }