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hw/pci: fixed hotplug crash when using rombar=0 with devices having romfile

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Hot-plugging a device that has a romfile (either supplied by user
or built-in) using rombar=0 option is a user error,
do not allow the device to be hot-plugged.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2014-10-27 19:34:42 +02:00 committed by Michael S. Tsirkin
parent 178e785fb4
commit db80c7b974
1 changed files with 9 additions and 0 deletions
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9
hw/pci/pci.c
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@ -1942,6 +1942,15 @@ static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom)
* for 0.11 compatibility.
*/
int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
/*
* Hot-plugged devices can't use the option ROM
* if the rom bar is disabled.
*/
if (DEVICE(pdev)->hotplugged) {
return -1;
}
if (class == 0x0300) {
rom_add_vga(pdev->romfile);
} else {