PCI: Add pci_reset_function_locked()
authorMarc Zyngier <marc.zyngier@arm.com>
Wed, 2 Aug 2017 01:11:02 +0000 (20:11 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 2 Aug 2017 01:11:02 +0000 (20:11 -0500)
commita477b9cd37aa81a490dfa3265b7ff4f2c5a92463
tree267e7a1f7da0e629dc7f8b5829f0afced68c41cf
parent16f73eb02d7e1765ccab3d2018e0bd98eb93d973
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
drivers/pci/pci.c
include/linux/pci.h