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powerpc/eeh: Remove unnecessary pointer to phb from eeh_dev

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The eeh_dev struct already holds a pointer to pci_dn which it does not
exist without and pci_dn itself holds the very same pointer so just
use it.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2017-08-29 17:34:01 +10:00 committed by Michael Ellerman
parent 8bae6a2319
commit 69672bd748
7 changed files with 20 additions and 23 deletions
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1
arch/powerpc/include/asm/eeh.h
View File

@ -141,7 +141,6 @@ struct eeh_dev {
struct eeh_pe *pe; /* Associated PE */
struct list_head list; /* Form link list in the PE */
struct list_head rmv_list; /* Record the removed edevs */
struct pci_controller *phb; /* Associated PHB */
struct pci_dn *pdn; /* Associated PCI device node */
struct pci_dev *pdev; /* Associated PCI device */
bool in_error; /* Error flag for edev */

7
arch/powerpc/kernel/eeh.c
View File

@ -170,10 +170,10 @@ static size_t eeh_dump_dev_log(struct eeh_dev *edev, char *buf, size_t len)
char buffer[128];
n += scnprintf(buf+n, len-n, "%04x:%02x:%02x.%01x\n",
edev->phb->global_number, pdn->busno,
pdn->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
pr_warn("EEH: of node=%04x:%02x:%02x.%01x\n",
edev->phb->global_number, pdn->busno,
pdn->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
eeh_ops->read_config(pdn, PCI_VENDOR_ID, 4, &cfg);
@ -1064,7 +1064,7 @@ core_initcall_sync(eeh_init);
*/
void eeh_add_device_early(struct pci_dn *pdn)
{
struct pci_controller *phb;
struct pci_controller *phb = pdn ? pdn->phb : NULL;
struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
if (!edev)
@ -1074,7 +1074,6 @@ void eeh_add_device_early(struct pci_dn *pdn)
return;
/* USB Bus children of PCI devices will not have BUID's */
phb = edev->phb;
if (NULL == phb ||
(eeh_has_flag(EEH_PROBE_MODE_DEVTREE) && 0 == phb->buid))
return;

2
arch/powerpc/kernel/eeh_dev.c
View File

@ -50,7 +50,6 @@
*/
struct eeh_dev *eeh_dev_init(struct pci_dn *pdn)
{
struct pci_controller *phb = pdn->phb;
struct eeh_dev *edev;
/* Allocate EEH device */
@ -64,7 +63,6 @@ struct eeh_dev *eeh_dev_init(struct pci_dn *pdn)
/* Associate EEH device with OF node */
pdn->edev = edev;
edev->pdn = pdn;
edev->phb = phb;
INIT_LIST_HEAD(&edev->list);
INIT_LIST_HEAD(&edev->rmv_list);

2
arch/powerpc/kernel/eeh_driver.c
View File

@ -428,7 +428,7 @@ static void *eeh_add_virt_device(void *data, void *userdata)
if (!(edev->physfn)) {
pr_warn("%s: EEH dev %04x:%02x:%02x.%01x not for VF\n",
__func__, edev->phb->global_number, pdn->busno,
__func__, pdn->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
return NULL;
}

24
arch/powerpc/kernel/eeh_pe.c
View File

@ -339,11 +339,12 @@ static struct eeh_pe *eeh_pe_get_parent(struct eeh_dev *edev)
int eeh_add_to_parent_pe(struct eeh_dev *edev)
{
struct eeh_pe *pe, *parent;
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
/* Check if the PE number is valid */
if (!eeh_has_flag(EEH_VALID_PE_ZERO) && !edev->pe_config_addr) {
pr_err("%s: Invalid PE#0 for edev 0x%x on PHB#%x\n",
__func__, edev->config_addr, edev->phb->global_number);
__func__, edev->config_addr, pdn->phb->global_number);
return -EINVAL;
}
@ -353,7 +354,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
* PE should be composed of PCI bus and its subordinate
* components.
*/
pe = eeh_pe_get(edev->pdn->phb, edev->pe_config_addr,
pe = eeh_pe_get(pdn->phb, edev->pe_config_addr,
edev->config_addr);
if (pe && !(pe->type & EEH_PE_INVALID)) {
/* Mark the PE as type of PCI bus */
@ -363,7 +364,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
/* Put the edev to PE */
list_add_tail(&edev->list, &pe->edevs);
pr_debug("EEH: Add %04x:%02x:%02x.%01x to Bus PE#%x\n",
edev->phb->global_number,
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
@ -386,7 +387,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
pr_debug("EEH: Add %04x:%02x:%02x.%01x to Device "
"PE#%x, Parent PE#%x\n",
edev->phb->global_number,
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
@ -396,9 +397,9 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
/* Create a new EEH PE */
if (edev->physfn)
pe = eeh_pe_alloc(edev->phb, EEH_PE_VF);
pe = eeh_pe_alloc(pdn->phb, EEH_PE_VF);
else
pe = eeh_pe_alloc(edev->phb, EEH_PE_DEVICE);
pe = eeh_pe_alloc(pdn->phb, EEH_PE_DEVICE);
if (!pe) {
pr_err("%s: out of memory!\n", __func__);
return -ENOMEM;
@ -414,10 +415,10 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
*/
parent = eeh_pe_get_parent(edev);
if (!parent) {
parent = eeh_phb_pe_get(edev->phb);
parent = eeh_phb_pe_get(pdn->phb);
if (!parent) {
pr_err("%s: No PHB PE is found (PHB Domain=%d)\n",
__func__, edev->phb->global_number);
__func__, pdn->phb->global_number);
edev->pe = NULL;
kfree(pe);
return -EEXIST;
@ -434,7 +435,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
edev->pe = pe;
pr_debug("EEH: Add %04x:%02x:%02x.%01x to "
"Device PE#%x, Parent PE#%x\n",
edev->phb->global_number,
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
@ -456,10 +457,11 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev)
{
struct eeh_pe *pe, *parent, *child;
int cnt;
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
if (!edev->pe) {
pr_debug("%s: No PE found for device %04x:%02x:%02x.%01x\n",
__func__, edev->phb->global_number,
__func__, pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF));
@ -722,7 +724,7 @@ static void eeh_bridge_check_link(struct eeh_dev *edev)
return;
pr_debug("%s: Check PCIe link for %04x:%02x:%02x.%01x ...\n",
__func__, edev->phb->global_number,
__func__, pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF));

5
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -926,7 +926,6 @@ void pnv_pci_reset_secondary_bus(struct pci_dev *dev)
static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type,
int pos, u16 mask)
{
struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
int i, status = 0;
/* Wait for Transaction Pending bit to be cleared */
@ -940,7 +939,7 @@ static void pnv_eeh_wait_for_pending(struct pci_dn *pdn, const char *type,
pr_warn("%s: Pending transaction while issuing %sFLR to %04x:%02x:%02x.%01x\n",
__func__, type,
edev->phb->global_number, pdn->busno,
pdn->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
}
@ -1714,7 +1713,7 @@ static int pnv_eeh_restore_config(struct pci_dn *pdn)
if (edev->physfn) {
ret = pnv_eeh_restore_vf_config(pdn);
} else {
phb = edev->phb->private_data;
phb = pdn->phb->private_data;
ret = opal_pci_reinit(phb->opal_id,
OPAL_REINIT_PCI_DEV, edev->config_addr);
}

2
arch/powerpc/platforms/pseries/eeh_pseries.c
View File

@ -247,7 +247,7 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
/* Initialize the fake PE */
memset(&pe, 0, sizeof(struct eeh_pe));
pe.phb = edev->phb;
pe.phb = pdn->phb;
pe.config_addr = (pdn->busno << 16) | (pdn->devfn << 8);
/* Enable EEH on the device */