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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-07-24 17:18:38 +0100
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-07-28 15:12:11 -0700
commit979b1791e5b8f8b556faeec4c48339e7ed63af9f (patch)
tree30990937096bb25aa8349dae7285e70f268a767a /drivers/pci/pci.c
parent362b7077a5546b42131af15ba4776f30c9a72d0c (diff)
downloadop-kernel-dev-979b1791e5b8f8b556faeec4c48339e7ed63af9f.zip
op-kernel-dev-979b1791e5b8f8b556faeec4c48339e7ed63af9f.tar.gz
PCI: add D3 power state avoidance quirk
Libata has some hacks to deal with certain controllers going silly in D3 state. The right way to handle this is to keep a PCI device flag for such devices. That can then be generalised for no ATA devices with power problems. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c95f77d..0a3d856 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -572,6 +572,10 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
if (!ret)
pci_update_current_state(dev);
}
+ /* This device is quirked not to be put into D3, so
+ don't put it in D3 */
+ if (state == PCI_D3hot && (dev->dev_flags & PCI_DEV_FLAGS_NO_D3))
+ return 0;
error = pci_raw_set_power_state(dev, state);
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