diff options
| author | Shanker Donthineni <sdonthineni@nvidia.com> | 2021-08-17 20:04:59 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-08-19 00:32:42 +0200 |
| commit | 6937b7dd434962377e00efc04adac0390c287199 (patch) | |
| tree | 59b281bc05bce2d5fa7407458423c873c453acc9 /drivers/pci/pci.h | |
| parent | PCI: Setup ACPI fwnode early and at the same time with OF (diff) | |
| download | linux-6937b7dd434962377e00efc04adac0390c287199.tar.xz linux-6937b7dd434962377e00efc04adac0390c287199.zip | |
PCI: Add support for ACPI _RST reset method
_RST is a standard ACPI method that performs a function level reset of a
device (ACPI v6.3, sec 7.3.25).
Add pci_dev_acpi_reset() to probe for _RST method and execute if present.
The default priority of this reset is set to below device-specific and
above hardware resets.
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/r/20210817180500.1253-9-ameynarkhede03@gmail.com
Signed-off-by: Shanker Donthineni <sdonthineni@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 232047e58b73..87cfd8db8827 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -708,7 +708,13 @@ static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL int pci_acpi_program_hp_params(struct pci_dev *dev); extern const struct attribute_group pci_dev_acpi_attr_group; void pci_set_acpi_fwnode(struct pci_dev *dev); +int pci_dev_acpi_reset(struct pci_dev *dev, int probe); #else +static inline int pci_dev_acpi_reset(struct pci_dev *dev, int probe) +{ + return -ENOTTY; +} + static inline void pci_set_acpi_fwnode(struct pci_dev *dev) {} static inline int pci_acpi_program_hp_params(struct pci_dev *dev) { |