asiliantfb: fix cmap memory leaks
- fix cmap leak in removal path
- fix cmap leak when register_framebuffer fails
- check return value of fb_alloc_cmap
- don't continue with driver setup if register_framebuffer fails
[krzysztof.h1@wp.pl: spotted missing iounmap]
[randy.dunlap@oracle.com: move data declaration before any code]
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/asiliantfb.c b/drivers/video/asiliantfb.c
index 1fd22f4..1a1f946 100644
--- a/drivers/video/asiliantfb.c
+++ b/drivers/video/asiliantfb.c
@@ -505,19 +505,27 @@
.vsync_len = 2,
};
-static void __devinit init_asiliant(struct fb_info *p, unsigned long addr)
+static int __devinit init_asiliant(struct fb_info *p, unsigned long addr)
{
+ int err;
+
p->fix = asiliantfb_fix;
p->fix.smem_start = addr;
p->var = asiliantfb_var;
p->fbops = &asiliantfb_ops;
p->flags = FBINFO_DEFAULT;
- fb_alloc_cmap(&p->cmap, 256, 0);
+ err = fb_alloc_cmap(&p->cmap, 256, 0);
+ if (err) {
+ printk(KERN_ERR "C&T 69000 fb failed to alloc cmap memory\n");
+ return err;
+ }
- if (register_framebuffer(p) < 0) {
+ err = register_framebuffer(p);
+ if (err < 0) {
printk(KERN_ERR "C&T 69000 framebuffer failed to register\n");
- return;
+ fb_dealloc_cmap(&p->cmap);
+ return err;
}
printk(KERN_INFO "fb%d: Asiliant 69000 frame buffer (%dK RAM detected)\n",
@@ -532,6 +540,7 @@
{
unsigned long addr, size;
struct fb_info *p;
+ int err;
if ((dp->resource[0].flags & IORESOURCE_MEM) == 0)
return -ENODEV;
@@ -560,7 +569,13 @@
pci_write_config_dword(dp, 4, 0x02800083);
writeb(3, p->screen_base + 0x400784);
- init_asiliant(p, addr);
+ err = init_asiliant(p, addr);
+ if (err) {
+ iounmap(p->screen_base);
+ release_mem_region(addr, size);
+ framebuffer_release(p);
+ return err;
+ }
pci_set_drvdata(dp, p);
return 0;
@@ -571,6 +586,7 @@
struct fb_info *p = pci_get_drvdata(dp);
unregister_framebuffer(p);
+ fb_dealloc_cmap(&p->cmap);
iounmap(p->screen_base);
release_mem_region(pci_resource_start(dp, 0), pci_resource_len(dp, 0));
pci_set_drvdata(dp, NULL);