diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2018-03-09 20:21:24 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <helgaas@kernel.org> | 2018-03-31 01:26:54 +0300 |
| commit | 168f3ae595d6a6cee8321633f29273a7dd4fc83e (patch) | |
| tree | 1fb37b212ad8622ff0c7a4ec79423f89046e40c8 | |
| parent | c6c889d932bb49d95273711a790d16f814cb213b (diff) | |
| download | linux-168f3ae595d6a6cee8321633f29273a7dd4fc83e.tar.xz | |
PCI/portdrv: Remove unused PCIE_PORT_SERVICE_VC
No driver registers for PCIE_PORT_SERVICE_VC, so remove it.
This removes the VC "service" files from /sys/bus/pci_express/devices,
e.g., 0000:07:00.0:pcie108, 0000:08:04.0:pcie208 (all the files that
contained "8" as the last digit of the "pcieXXX" part). The port driver
created these files for PCIe port devices that have a VC Capability.
Since this reduces PCIE_PORT_DEVICE_MAXSERVICES and moves DPC down into the
spot where VC used to be, the DPC sysfs files will now be named "pcieXX8".
I don't think there's anything useful userspace can do with those files, so
I hope nobody cares about these filenames.
There is no VC driver that calls pcie_port_service_register(), so there
never was a /sys/bus/pci_express/drivers/vc directory.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/pci/pcie/portdrv.h | 6 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_acpi.c | 2 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 14 |
3 files changed, 7 insertions, 15 deletions
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index 7086086e45d0..7bfd75f9197b 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -19,12 +19,10 @@ #define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT) #define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */ #define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT) -#define PCIE_PORT_SERVICE_VC_SHIFT 3 /* Virtual Channel */ -#define PCIE_PORT_SERVICE_VC (1 << PCIE_PORT_SERVICE_VC_SHIFT) -#define PCIE_PORT_SERVICE_DPC_SHIFT 4 /* Downstream Port Containment */ +#define PCIE_PORT_SERVICE_DPC_SHIFT 3 /* Downstream Port Containment */ #define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT) -#define PCIE_PORT_DEVICE_MAXSERVICES 5 +#define PCIE_PORT_DEVICE_MAXSERVICES 4 /* Port Type */ #define PCIE_ANY_PORT (~0) diff --git a/drivers/pci/pcie/portdrv_acpi.c b/drivers/pci/pcie/portdrv_acpi.c index 53f60053bd47..9d12650dc2ae 100644 --- a/drivers/pci/pcie/portdrv_acpi.c +++ b/drivers/pci/pcie/portdrv_acpi.c @@ -47,7 +47,7 @@ void pcie_port_acpi_setup(struct pci_dev *port, int *srv_mask) flags = root->osc_control_set; - *srv_mask = PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_DPC; + *srv_mask = PCIE_PORT_SERVICE_DPC; if (flags & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL) *srv_mask |= PCIE_PORT_SERVICE_HP; if (flags & OSC_PCI_EXPRESS_PME_CONTROL) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 9a41751db332..bf851da97947 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -188,10 +188,8 @@ legacy_irq: if (ret < 0) return -ENODEV; - for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) { - if (i != PCIE_PORT_SERVICE_VC_SHIFT) - irqs[i] = pci_irq_vector(dev, 0); - } + for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) + irqs[i] = pci_irq_vector(dev, 0); return 0; } @@ -211,8 +209,7 @@ static int get_port_device_capability(struct pci_dev *dev) int services = 0; int cap_mask = 0; - cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP - | PCIE_PORT_SERVICE_VC; + cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP; if (pci_aer_available()) cap_mask |= PCIE_PORT_SERVICE_AER | PCIE_PORT_SERVICE_DPC; @@ -239,9 +236,6 @@ static int get_port_device_capability(struct pci_dev *dev) */ pci_disable_pcie_error_reporting(dev); } - /* VC support */ - if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC)) - services |= PCIE_PORT_SERVICE_VC; /* Root ports are capable of generating PME too */ if ((cap_mask & PCIE_PORT_SERVICE_PME) && pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) { @@ -331,7 +325,7 @@ int pcie_port_device_register(struct pci_dev *dev) */ status = pcie_init_service_irqs(dev, irqs, capabilities); if (status) { - capabilities &= PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_HP; + capabilities &= PCIE_PORT_SERVICE_HP; if (!capabilities) goto error_disable; } |