[PATCH v9 5/5] PCI/DPC: Move AER/DPC dependency checks out of DPC driver

From: sathyanarayanan . kuppuswamy
Date: Fri Sep 18 2020 - 16:08:41 EST


From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>

Currently, AER and DPC Capabilities dependency checks is
distributed between DPC and portdrv service drivers. So move
them out of DPC driver.

Also, since services & PCIE_PORT_SERVICE_AER check already
ensures AER native ownership, no need to add additional
pcie_aer_is_native() check.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
---
drivers/pci/pcie/dpc.c | 4 ----
drivers/pci/pcie/portdrv_core.c | 1 +
2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index 5b1025a2994d..6261b0382f65 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -280,14 +280,10 @@ void pci_dpc_init(struct pci_dev *pdev)
static int dpc_probe(struct pcie_device *dev)
{
struct pci_dev *pdev = dev->port;
- struct pci_host_bridge *host = pci_find_host_bridge(pdev->bus);
struct device *device = &dev->device;
int status;
u16 ctl, cap;

- if (!pcie_aer_is_native(pdev) && !host->native_dpc)
- return -ENOTSUPP;
-
status = devm_request_threaded_irq(device, dev->irq, dpc_irq,
dpc_handler, IRQF_SHARED,
"pcie-dpc", pdev);
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index e257a2ca3595..ffa1d9fc458e 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -252,6 +252,7 @@ static int get_port_device_capability(struct pci_dev *dev)
* permission to use AER.
*/
if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) &&
+ host->native_dpc &&
(host->native_dpc || (services & PCIE_PORT_SERVICE_AER)))
services |= PCIE_PORT_SERVICE_DPC;

--
2.17.1