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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-10 12:04:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-10 12:04:40 -0700
commitc5114626f33b62fa7595e57d87f33d9d1f8298a2 (patch)
tree9e6e746cc7ec599e44ffa33578af40236019b65f
parent7ec02e3bf45e0e7502db7f8d50c19abc1ebbab00 (diff)
parent9a2a5a638f8eb9c612a7a9af0afab93f506f6ba4 (diff)
downloadlinux-c5114626f33b62fa7595e57d87f33d9d1f8298a2.tar.gz
Merge tag 'pci-v4.6-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas: "Since v4.5, we've WARNed during resume if a PCI device, including a Thunderbolt device, was added while we were suspended. A change we merged for v4.6-rc1 turned that warning into a system hang. These enumeration patches from Lukas Wunner fix this issue: - Fix BUG on device attach failure - Do not treat EPROBE_DEFER as device attach failure" * tag 'pci-v4.6-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Do not treat EPROBE_DEFER as device attach failure PCI: Fix BUG on device attach failure
-rw-r--r--drivers/pci/bus.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6c9f5467bc5f..dd7cdbee8029 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -294,7 +294,7 @@ void pci_bus_add_device(struct pci_dev *dev)
dev->match_driver = true;
retval = device_attach(&dev->dev);
- if (retval < 0) {
+ if (retval < 0 && retval != -EPROBE_DEFER) {
dev_warn(&dev->dev, "device attach failed (%d)\n", retval);
pci_proc_detach_device(dev);
pci_remove_sysfs_dev_files(dev);
@@ -324,7 +324,9 @@ void pci_bus_add_devices(const struct pci_bus *bus)
}
list_for_each_entry(dev, &bus->devices, bus_list) {
- BUG_ON(!dev->is_added);
+ /* Skip if device attach failed */
+ if (!dev->is_added)
+ continue;
child = dev->subordinate;
if (child)
pci_bus_add_devices(child);