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authorAndy Lutomirski <luto@MIT.EDU>2011-05-26 10:13:32 -0400
committerPaul Mundt <lethal@linux-sh.org>2011-06-02 17:18:05 +0900
commitda0241f12bf785f74e57ad6d67abdf269216f76b (patch)
treecf4a125e4f3ec5aac6b8d1e20a90750402903907 /drivers
parent3c004b4f7eab239e726c6dde0f6cfca46a96956b (diff)
efifb: Fix mismatched request/release_mem_region
Signed-off-by: Andy Lutomirski <luto@mit.edu> Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/efifb.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
index 7f06247a21e..8cb31e106b9 100644
--- a/drivers/video/efifb.c
+++ b/drivers/video/efifb.c
@@ -16,6 +16,8 @@
#include <linux/pci.h>
#include <video/vga.h>
+static bool request_mem_succeeded = false;
+
static struct fb_var_screeninfo efifb_defined __devinitdata = {
.activate = FB_ACTIVATE_NOW,
.height = -1,
@@ -281,7 +283,9 @@ static void efifb_destroy(struct fb_info *info)
{
if (info->screen_base)
iounmap(info->screen_base);
- release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
+ if (request_mem_succeeded)
+ release_mem_region(info->apertures->ranges[0].base,
+ info->apertures->ranges[0].size);
framebuffer_release(info);
}
@@ -333,7 +337,6 @@ static int __devinit efifb_probe(struct platform_device *dev)
unsigned int size_vmode;
unsigned int size_remap;
unsigned int size_total;
- int request_succeeded = 0;
if (!screen_info.lfb_depth)
screen_info.lfb_depth = 32;
@@ -387,7 +390,7 @@ static int __devinit efifb_probe(struct platform_device *dev)
efifb_fix.smem_len = size_remap;
if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) {
- request_succeeded = 1;
+ request_mem_succeeded = true;
} else {
/* We cannot make this fatal. Sometimes this comes from magic
spaces our resource handlers simply don't know about */
@@ -491,7 +494,7 @@ err_unmap:
err_release_fb:
framebuffer_release(info);
err_release_mem:
- if (request_succeeded)
+ if (request_mem_succeeded)
release_mem_region(efifb_fix.smem_start, size_total);
return err;
}