diff options
| author | Amol Lad <amol@verismonetworks.com> | 2006-12-08 02:40:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:29:04 -0800 |
| commit | a02f6402d5a18f5a4fd35cb82887c1097d0f7792 (patch) | |
| tree | 43046222e74b789358190b9edca1990fc053a871 /drivers/video/tridentfb.c | |
| parent | b88a57cc645c59a3652f391f8069b15d42ac0762 (diff) | |
| download | lwn-a02f6402d5a18f5a4fd35cb82887c1097d0f7792.tar.gz lwn-a02f6402d5a18f5a4fd35cb82887c1097d0f7792.zip | |
[PATCH] ioremap balanced with iounmap for drivers/video/tridentfb
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: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/tridentfb.c')
| -rw-r--r-- | drivers/video/tridentfb.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c index 14175cdb9c9c..55e8aa450bfa 100644 --- a/drivers/video/tridentfb.c +++ b/drivers/video/tridentfb.c @@ -1130,7 +1130,8 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de if (!request_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len, "tridentfb")) { debug("request_mem_region failed!\n"); - return -1; + err = -1; + goto out_unmap; } fb_info.screen_base = ioremap_nocache(tridentfb_fix.smem_start, @@ -1139,7 +1140,8 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de if (!fb_info.screen_base) { release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len); debug("ioremap failed\n"); - return -1; + err = -1; + goto out_unmap; } output("%s board found\n", pci_name(dev)); @@ -1162,8 +1164,10 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de #endif fb_info.pseudo_palette = pseudo_pal; - if (!fb_find_mode(&default_var,&fb_info,mode,NULL,0,NULL,bpp)) - return -EINVAL; + if (!fb_find_mode(&default_var,&fb_info,mode,NULL,0,NULL,bpp)) { + err = -EINVAL; + goto out_unmap; + } fb_alloc_cmap(&fb_info.cmap,256,0); if (defaultaccel && acc) default_var.accel_flags |= FB_ACCELF_TEXT; @@ -1174,12 +1178,20 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de fb_info.device = &dev->dev; if (register_framebuffer(&fb_info) < 0) { printk(KERN_ERR "tridentfb: could not register Trident framebuffer\n"); - return -EINVAL; + err = -EINVAL; + goto out_unmap; } output("fb%d: %s frame buffer device %dx%d-%dbpp\n", fb_info.node, fb_info.fix.id,default_var.xres, default_var.yres,default_var.bits_per_pixel); return 0; + +out_unmap: + if (default_par.io_virt) + iounmap(default_par.io_virt); + if (fb_info.screen_base) + iounmap(fb_info.screen_base); + return err; } static void __devexit trident_pci_remove(struct pci_dev * dev) |