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pci/hotplug/pnv-php: Wrap warnings in macro 

An opencapi slot doesn't have an associated bridge device. It's not
needed for operation, but any warning is displayed through pci_warn()
which uses the pci_dev struct of the assocated bridge device. So wrap
those warning so that a different trace mechanism can be used if it's
an opencapi slot.

Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-11-fbarrat@linux.ibm.com
This commit is contained in:
Frederic Barrat 2019-11-21 14:49:17 +01:00 committed by Michael Ellerman
parent be1611e043
commit 748ac391ab
1 changed files with 28 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/pci/hotplug/pnv_php.c
View File

@ -18,6 +18,9 @@
#define DRIVER_AUTHOR "Gavin Shan, IBM Corporation"
#define DRIVER_DESC "PowerPC PowerNV PCI Hotplug Driver"
#define SLOT_WARN(sl, x...) \
((sl)->pdev ? pci_warn((sl)->pdev, x) : dev_warn(&(sl)->bus->dev, x))
struct pnv_php_event {
bool added;
struct pnv_php_slot *php_slot;
@ -265,7 +268,7 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot)
ret = pnv_pci_get_device_tree(php_slot->dn->phandle, fdt1, 0x10000);
if (ret) {
pci_warn(php_slot->pdev, "Error %d getting FDT blob\n", ret);
SLOT_WARN(php_slot, "Error %d getting FDT blob\n", ret);
goto free_fdt1;
}
@ -279,7 +282,7 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot)
dt = of_fdt_unflatten_tree(fdt, php_slot->dn, NULL);
if (!dt) {
ret = -EINVAL;
pci_warn(php_slot->pdev, "Cannot unflatten FDT\n");
SLOT_WARN(php_slot, "Cannot unflatten FDT\n");
goto free_fdt;
}
@ -289,15 +292,15 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot)
ret = pnv_php_populate_changeset(&php_slot->ocs, php_slot->dn);
if (ret) {
pnv_php_reverse_nodes(php_slot->dn);
pci_warn(php_slot->pdev, "Error %d populating changeset\n",
ret);
SLOT_WARN(php_slot, "Error %d populating changeset\n",
ret);
goto free_dt;
}
php_slot->dn->child = NULL;
ret = of_changeset_apply(&php_slot->ocs);
if (ret) {
pci_warn(php_slot->pdev, "Error %d applying changeset\n", ret);
SLOT_WARN(php_slot, "Error %d applying changeset\n", ret);
goto destroy_changeset;
}
@ -337,10 +340,10 @@ int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
if (ret > 0) {
if (be64_to_cpu(msg.params[1]) != php_slot->dn->phandle ||
be64_to_cpu(msg.params[2]) != state) {
pci_warn(php_slot->pdev, "Wrong msg (%lld, %lld, %lld)\n",
be64_to_cpu(msg.params[1]),
be64_to_cpu(msg.params[2]),
be64_to_cpu(msg.params[3]));
SLOT_WARN(php_slot, "Wrong msg (%lld, %lld, %lld)\n",
be64_to_cpu(msg.params[1]),
be64_to_cpu(msg.params[2]),
be64_to_cpu(msg.params[3]));
return -ENOMSG;
}
if (be64_to_cpu(msg.params[3]) != OPAL_SUCCESS) {
@ -359,8 +362,8 @@ int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
return ret;
error:
pci_warn(php_slot->pdev, "Error %d powering %s\n",
ret, (state == OPAL_PCI_SLOT_POWER_ON) ? "on" : "off");
SLOT_WARN(php_slot, "Error %d powering %s\n",
ret, (state == OPAL_PCI_SLOT_POWER_ON) ? "on" : "off");
return ret;
}
EXPORT_SYMBOL_GPL(pnv_php_set_slot_power_state);
@ -378,8 +381,8 @@ static int pnv_php_get_power_state(struct hotplug_slot *slot, u8 *state)
*/
ret = pnv_pci_get_power_state(php_slot->id, &power_state);
if (ret) {
pci_warn(php_slot->pdev, "Error %d getting power status\n",
ret);
SLOT_WARN(php_slot, "Error %d getting power status\n",
ret);
} else {
*state = power_state;
}
@ -402,7 +405,7 @@ static int pnv_php_get_adapter_state(struct hotplug_slot *slot, u8 *state)
*state = presence;
ret = 0;
} else {
pci_warn(php_slot->pdev, "Error %d getting presence\n", ret);
SLOT_WARN(php_slot, "Error %d getting presence\n", ret);
}
return ret;
@ -681,7 +684,7 @@ static int pnv_php_register_slot(struct pnv_php_slot *php_slot)
ret = pci_hp_register(&php_slot->slot, php_slot->bus,
php_slot->slot_no, php_slot->name);
if (ret) {
pci_warn(php_slot->pdev, "Error %d registering slot\n", ret);
SLOT_WARN(php_slot, "Error %d registering slot\n", ret);
return ret;
}
@ -734,7 +737,7 @@ static int pnv_php_enable_msix(struct pnv_php_slot *php_slot)
/* Enable MSIx */
ret = pci_enable_msix_exact(pdev, &entry, 1);
if (ret) {
pci_warn(pdev, "Error %d enabling MSIx\n", ret);
SLOT_WARN(php_slot, "Error %d enabling MSIx\n", ret);
return ret;
}
@ -784,8 +787,9 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data)
(sts & PCI_EXP_SLTSTA_PDC)) {
ret = pnv_pci_get_presence_state(php_slot->id, &presence);
if (ret) {
pci_warn(pdev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n",
php_slot->name, ret, sts);
SLOT_WARN(php_slot,
"PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n",
php_slot->name, ret, sts);
return IRQ_HANDLED;
}
@ -815,8 +819,9 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data)
*/
event = kzalloc(sizeof(*event), GFP_ATOMIC);
if (!event) {
pci_warn(pdev, "PCI slot [%s] missed hotplug event 0x%04x\n",
php_slot->name, sts);
SLOT_WARN(php_slot,
"PCI slot [%s] missed hotplug event 0x%04x\n",
php_slot->name, sts);
return IRQ_HANDLED;
}
@ -840,7 +845,7 @@ static void pnv_php_init_irq(struct pnv_php_slot *php_slot, int irq)
/* Allocate workqueue */
php_slot->wq = alloc_workqueue("pciehp-%s", 0, 0, php_slot->name);
if (!php_slot->wq) {
pci_warn(pdev, "Cannot alloc workqueue\n");
SLOT_WARN(php_slot, "Cannot alloc workqueue\n");
pnv_php_disable_irq(php_slot, true);
return;
}
@ -864,7 +869,7 @@ static void pnv_php_init_irq(struct pnv_php_slot *php_slot, int irq)
php_slot->name, php_slot);
if (ret) {
pnv_php_disable_irq(php_slot, true);
pci_warn(pdev, "Error %d enabling IRQ %d\n", ret, irq);
SLOT_WARN(php_slot, "Error %d enabling IRQ %d\n", ret, irq);
return;
}
@ -900,7 +905,7 @@ static void pnv_php_enable_irq(struct pnv_php_slot *php_slot)
ret = pci_enable_device(pdev);
if (ret) {
pci_warn(pdev, "Error %d enabling device\n", ret);
SLOT_WARN(php_slot, "Error %d enabling device\n", ret);
return;
}