diff options
author | Bjorn Helgaas <bhelgaas@google.com> | 2013-02-12 15:42:36 -0500 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-02-12 15:42:36 -0500 |
commit | 20f24208f631141bafe57ce5bcc8f2e7f3c41aae (patch) | |
tree | 6220d9be56bb9e8dd1154f34905671fbf06d35b1 /drivers/pci/pci.c | |
parent | f2dfcde4ccd101fa3ba8f6c27273a0e359ea9c9c (diff) | |
parent | 82fee4d67ab86d6fe5eb0f9a9e988ca9d654d765 (diff) |
Merge branch 'pci/konstantin-runtime-pm' into next
* pci/konstantin-runtime-pm:
PCI/PM: Clear state_saved during suspend
PCI: Use atomic_inc_return() rather than atomic_add_return()
PCI: Catch attempts to disable already-disabled devices
PCI: Disable Bus Master unconditionally in pci_device_shutdown()
Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r-- | drivers/pci/pci.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 393cf095a0c4..924e4665bd57 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c | |||
@@ -1168,7 +1168,7 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags) | |||
1168 | dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK); | 1168 | dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK); |
1169 | } | 1169 | } |
1170 | 1170 | ||
1171 | if (atomic_add_return(1, &dev->enable_cnt) > 1) | 1171 | if (atomic_inc_return(&dev->enable_cnt) > 1) |
1172 | return 0; /* already enabled */ | 1172 | return 0; /* already enabled */ |
1173 | 1173 | ||
1174 | /* only skip sriov related */ | 1174 | /* only skip sriov related */ |
@@ -1395,7 +1395,10 @@ pci_disable_device(struct pci_dev *dev) | |||
1395 | if (dr) | 1395 | if (dr) |
1396 | dr->enabled = 0; | 1396 | dr->enabled = 0; |
1397 | 1397 | ||
1398 | if (atomic_sub_return(1, &dev->enable_cnt) != 0) | 1398 | dev_WARN_ONCE(&dev->dev, atomic_read(&dev->enable_cnt) <= 0, |
1399 | "disabling already-disabled device"); | ||
1400 | |||
1401 | if (atomic_dec_return(&dev->enable_cnt) != 0) | ||
1399 | return; | 1402 | return; |
1400 | 1403 | ||
1401 | do_pci_disable_device(dev); | 1404 | do_pci_disable_device(dev); |