4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
commit 67b4eab91caf2ad574cab1b17ae09180ea2e116e upstream.
Revert 811a4e6fce09 ("PCI: Add helpers to manage pci_dev->irq and
pci_dev->irq_managed").
This is part of reverting 991de2e59090 ("PCI, x86: Implement
pcibios_alloc_irq() and pcibios_free_irq()") to fix regressions it
introduced.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=111211
Fixes: 991de2e59090 ("PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()")
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael@xxxxxxxxxx>
CC: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/pci/intel_mid_pci.c | 4 ++--
arch/x86/pci/irq.c | 10 ++++++----
drivers/acpi/pci_irq.c | 10 ++++++----
include/linux/pci.h | 17 -----------------
4 files changed, 14 insertions(+), 27 deletions(-)
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -215,7 +215,7 @@ static int intel_mid_pci_irq_enable(stru
int polarity;
int ret;
- if (pci_has_managed_irq(dev))
+ if (dev->irq_managed && dev->irq > 0)
return 0;
switch (intel_mid_identify_cpu()) {
@@ -256,7 +256,7 @@ static int intel_mid_pci_irq_enable(stru
static void intel_mid_pci_irq_disable(struct pci_dev *dev)
{
- if (pci_has_managed_irq(dev)) {
+ if (dev->irq_managed && dev->irq > 0) {
mp_unmap_irq(dev->irq);
dev->irq_managed = 0;
/*
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -1202,7 +1202,7 @@ static int pirq_enable_irq(struct pci_de
struct pci_dev *temp_dev;
int irq;
- if (pci_has_managed_irq(dev))
+ if (dev->irq_managed && dev->irq > 0)
return 0;
irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
@@ -1230,7 +1230,8 @@ static int pirq_enable_irq(struct pci_de
}
dev = temp_dev;
if (irq >= 0) {
- pci_set_managed_irq(dev, irq);
+ dev->irq_managed = 1;
+ dev->irq = irq;
dev_info(&dev->dev, "PCI->APIC IRQ transform: "
"INT %c -> IRQ %d\n", 'A' + pin - 1, irq);
return 0;
@@ -1258,8 +1259,9 @@ static int pirq_enable_irq(struct pci_de
static void pirq_disable_irq(struct pci_dev *dev)
{
- if (io_apic_assign_pci_irqs && pci_has_managed_irq(dev)) {
+ if (io_apic_assign_pci_irqs && dev->irq_managed && dev->irq) {
mp_unmap_irq(dev->irq);
- pci_reset_managed_irq(dev);
+ dev->irq = 0;
+ dev->irq_managed = 0;
}
}
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -409,7 +409,7 @@ int acpi_pci_irq_enable(struct pci_dev *
return 0;
}
- if (pci_has_managed_irq(dev))
+ if (dev->irq_managed && dev->irq > 0)
return 0;
entry = acpi_pci_irq_lookup(dev, pin);
@@ -454,7 +454,8 @@ int acpi_pci_irq_enable(struct pci_dev *
kfree(entry);
return rc;
}
- pci_set_managed_irq(dev, rc);
+ dev->irq = rc;
+ dev->irq_managed = 1;
if (link)
snprintf(link_desc, sizeof(link_desc), " -> Link[%s]", link);
@@ -477,7 +478,7 @@ void acpi_pci_irq_disable(struct pci_dev
u8 pin;
pin = dev->pin;
- if (!pin || !pci_has_managed_irq(dev))
+ if (!pin || !dev->irq_managed || dev->irq <= 0)
return;
entry = acpi_pci_irq_lookup(dev, pin);
@@ -499,6 +500,7 @@ void acpi_pci_irq_disable(struct pci_dev
dev_dbg(&dev->dev, "PCI INT %c disabled\n", pin_name(pin));
if (gsi >= 0) {
acpi_unregister_gsi(gsi);
- pci_reset_managed_irq(dev);
+ dev->irq_managed = 0;
+ dev->irq = 0;
}
}
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -989,23 +989,6 @@ static inline int pci_is_managed(struct
return pdev->is_managed;
}
-static inline void pci_set_managed_irq(struct pci_dev *pdev, unsigned int irq)
-{
- pdev->irq = irq;
- pdev->irq_managed = 1;
-}
-
-static inline void pci_reset_managed_irq(struct pci_dev *pdev)
-{
- pdev->irq = 0;
- pdev->irq_managed = 0;
-}
-
-static inline bool pci_has_managed_irq(struct pci_dev *pdev)
-{
- return pdev->irq_managed && pdev->irq > 0;
-}
-
void pci_disable_device(struct pci_dev *dev);
extern unsigned int pcibios_max_latency;
--
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