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[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>
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parent
b88a57cc64
commit
a02f6402d5
1 changed files with 17 additions and 5 deletions
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@ -1130,7 +1130,8 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de
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if (!request_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len, "tridentfb")) {
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debug("request_mem_region failed!\n");
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return -1;
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err = -1;
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goto out_unmap;
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}
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fb_info.screen_base = ioremap_nocache(tridentfb_fix.smem_start,
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@ -1139,7 +1140,8 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de
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if (!fb_info.screen_base) {
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release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len);
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debug("ioremap failed\n");
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return -1;
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err = -1;
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goto out_unmap;
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}
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output("%s board found\n", pci_name(dev));
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@ -1162,8 +1164,10 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de
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#endif
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fb_info.pseudo_palette = pseudo_pal;
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if (!fb_find_mode(&default_var,&fb_info,mode,NULL,0,NULL,bpp))
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return -EINVAL;
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if (!fb_find_mode(&default_var,&fb_info,mode,NULL,0,NULL,bpp)) {
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err = -EINVAL;
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goto out_unmap;
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}
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fb_alloc_cmap(&fb_info.cmap,256,0);
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if (defaultaccel && acc)
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default_var.accel_flags |= FB_ACCELF_TEXT;
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@ -1174,12 +1178,20 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de
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fb_info.device = &dev->dev;
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if (register_framebuffer(&fb_info) < 0) {
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printk(KERN_ERR "tridentfb: could not register Trident framebuffer\n");
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return -EINVAL;
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err = -EINVAL;
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goto out_unmap;
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}
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output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
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fb_info.node, fb_info.fix.id,default_var.xres,
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default_var.yres,default_var.bits_per_pixel);
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return 0;
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out_unmap:
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if (default_par.io_virt)
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iounmap(default_par.io_virt);
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if (fb_info.screen_base)
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iounmap(fb_info.screen_base);
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return err;
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}
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static void __devexit trident_pci_remove(struct pci_dev * dev)
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