diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-08-01 20:11:02 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-08-01 20:11:02 -0500 |
| commit | a477b9cd37aa81a490dfa3265b7ff4f2c5a92463 (patch) | |
| tree | 267e7a1f7da0e629dc7f8b5829f0afced68c41cf /include/linux/pci.h | |
| parent | 16f73eb02d7e1765ccab3d2018e0bd98eb93d973 (diff) | |
| download | lwn-a477b9cd37aa81a490dfa3265b7ff4f2c5a92463.tar.gz lwn-a477b9cd37aa81a490dfa3265b7ff4f2c5a92463.zip | |
PCI: Add pci_reset_function_locked()
The implementation of PCI workarounds may require that the device is reset
from its probe function. This implies that the PCI device lock is already
held, and makes calling pci_reset_function() impossible (since it will
itself try to take that lock).
Add pci_reset_function_locked(), which is the equivalent of
pci_reset_function(), except that it requires the PCI device lock to be
already held by the caller.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
[bhelgaas: folded in fix for conflict with 52354b9d1f46 ("PCI: Remove
__pci_dev_reset() and pci_dev_reset()")]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org # 4.11: 52354b9d1f46: PCI: Remove __pci_dev_reset() and pci_dev_reset()
Cc: stable@vger.kernel.org # 4.11
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 4869e66dd659..a75c13673852 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1067,6 +1067,7 @@ void pcie_flr(struct pci_dev *dev); int __pci_reset_function(struct pci_dev *dev); int __pci_reset_function_locked(struct pci_dev *dev); int pci_reset_function(struct pci_dev *dev); +int pci_reset_function_locked(struct pci_dev *dev); int pci_try_reset_function(struct pci_dev *dev); int pci_probe_reset_slot(struct pci_slot *slot); int pci_reset_slot(struct pci_slot *slot); |