Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 20:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

PCI: hotplug: pciehp: Removed check for hotplug of display devices

Browse Source 
Removed check to prevent hotplug of display devices within pciehp.
Originally this was thought to have been required within the PCI
Hotplug specification for some legacy devices.  However there is
no such requirement in the most recent revision. The check prevents
hotplug of not only display devices but also computational GPUs
which require serviceability.

Signed-off-by: Praveen Kalamegham <praveen@nextio.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Praveen Kalamegham 2010-05-19 17:03:12 -05:00 committed by Jesse Barnes
parent 3f6ea84a30
commit ac81860ea0
1 changed files with 3 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/pci/hotplug/pciehp_pci.c
View File

@ -84,12 +84,6 @@ int pciehp_configure_device(struct slot *p_slot)
dev = pci_get_slot(parent, PCI_DEVFN(0, fn));
if (!dev)
continue;
if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
ctrl_err(ctrl, "Cannot hot-add display device %s\n",
pci_name(dev));
pci_dev_put(dev);
continue;
}
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
@ -133,15 +127,9 @@ int pciehp_unconfigure_device(struct slot *p_slot)
presence = 0;
for (j = 0; j < 8; j++) {
struct pci_dev* temp = pci_get_slot(parent, PCI_DEVFN(0, j));
struct pci_dev *temp = pci_get_slot(parent, PCI_DEVFN(0, j));
if (!temp)
continue;
if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
ctrl_err(ctrl, "Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
continue;
}
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {
pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
if (bctl & PCI_BRIDGE_CTL_VGA) {
@ -149,7 +137,8 @@ int pciehp_unconfigure_device(struct slot *p_slot)
"Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
continue;
rc = EINVAL;
break;
}
}
pci_remove_bus_device(temp);