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firewire: ohci: fix DMA unmapping in an error path

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If request_irq failed, we would pass wrong arguments to
dma_free_coherent.  https://bugzilla.redhat.com/show_bug.cgi?id=728185

Reported-by: Mads Kiilerich
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2011-08-11 20:40:42 +02:00
parent 9c1176b6a2
commit a01e836087
1 changed files with 7 additions and 2 deletions
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7
drivers/firewire/ohci.c
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@ -2178,8 +2178,13 @@ static int ohci_enable(struct fw_card *card,
ohci_driver_name, ohci)) {
fw_error("Failed to allocate interrupt %d.\n", dev->irq);
pci_disable_msi(dev);
if (config_rom) {
dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
ohci->config_rom, ohci->config_rom_bus);
ohci->next_config_rom,
ohci->next_config_rom_bus);
ohci->next_config_rom = NULL;
}
return -EIO;
}