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PCI/AER: Use cached AER Capability offset 

Replace pci_find_ext_capability(..., PCI_EXT_CAP_ID_ERR) calls with
pci_dev->aer_cap.

pci_dev->aer_cap is initialized in pci_init_capabilities(), which happens
before any of these users of the AER Capability.

Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Frederick Lawler 2018-03-22 16:20:55 -05:00 committed by Bjorn Helgaas
parent d850882b72
commit f0553ba08a
3 changed files with 14 additions and 8 deletions
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4
drivers/pci/pcie/aer/aer_inject.c
View File

@ -344,7 +344,7 @@ static int aer_inject(struct aer_error_inj *einj)
goto out_put;
}
pos_cap_err = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
pos_cap_err = dev->aer_cap;
if (!pos_cap_err) {
pci_err(dev, "aer_inject: Device doesn't support AER\n");
ret = -EPROTONOSUPPORT;
@ -355,7 +355,7 @@ static int aer_inject(struct aer_error_inj *einj)
pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK,
&uncor_mask);
rp_pos_cap_err = pci_find_ext_capability(rpdev, PCI_EXT_CAP_ID_ERR);
rp_pos_cap_err = rpdev->aer_cap;
if (!rp_pos_cap_err) {
pci_err(rpdev, "aer_inject: Root port doesn't support AER\n");
ret = -EPROTONOSUPPORT;

4
drivers/pci/pcie/aer/ecrc.c
View File

@ -40,7 +40,7 @@ static int enable_ecrc_checking(struct pci_dev *dev)
if (!pci_is_pcie(dev))
return -ENODEV;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
pos = dev->aer_cap;
if (!pos)
return -ENODEV;
@ -68,7 +68,7 @@ static int disable_ecrc_checking(struct pci_dev *dev)
if (!pci_is_pcie(dev))
return -ENODEV;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
pos = dev->aer_cap;
if (!pos)
return -ENODEV;

14
drivers/pci/pcie/portdrv_core.c
View File

@ -40,7 +40,7 @@ static void release_pcie_device(struct device *dev)
static int pcie_message_numbers(struct pci_dev *dev, int mask,
u32 *pme, u32 *aer, u32 *dpc)
{
u32 nvec = 0, pos, reg32;
u32 nvec = 0, pos;
u16 reg16;
/*
@ -56,8 +56,11 @@ static int pcie_message_numbers(struct pci_dev *dev, int mask,
nvec = *pme + 1;
}
#ifdef CONFIG_PCIEAER
if (mask & PCIE_PORT_SERVICE_AER) {
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
u32 reg32;
pos = dev->aer_cap;
if (pos) {
pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS,
&reg32);
@ -65,6 +68,7 @@ static int pcie_message_numbers(struct pci_dev *dev, int mask,
nvec = max(nvec, *aer + 1);
}
}
#endif
if (mask & PCIE_PORT_SERVICE_DPC) {
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC);
@ -207,8 +211,9 @@ static int get_port_device_capability(struct pci_dev *dev)
PCI_EXP_SLTCTL_CCIE | PCI_EXP_SLTCTL_HPIE);
}
if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR) &&
pci_aer_available() && (pcie_ports_native || host->native_aer)) {
#ifdef CONFIG_PCIEAER
if (dev->aer_cap && pci_aer_available() &&
(pcie_ports_native || host->native_aer)) {
services |= PCIE_PORT_SERVICE_AER;
/*
@ -217,6 +222,7 @@ static int get_port_device_capability(struct pci_dev *dev)
*/
pci_disable_pcie_error_reporting(dev);
}
#endif
/*
* Root ports are capable of generating PME too. Root Complex