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Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"

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Revert 811a4e6fce ("PCI: Add helpers to manage pci_dev->irq and
pci_dev->irq_managed").

This is part of reverting 991de2e590 ("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: 991de2e590 ("PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
CC: Jiang Liu <jiang.liu@linux.intel.com>
This commit is contained in:
Bjorn Helgaas 2016-02-17 12:26:38 -06:00
parent fe25d07887
commit 67b4eab91c
4 changed files with 14 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/pci/intel_mid_pci.c
View File

@ -215,7 +215,7 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
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(struct pci_dev *dev)
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;
/*

10
arch/x86/pci/irq.c
View File

@ -1202,7 +1202,7 @@ static int pirq_enable_irq(struct pci_dev *dev)
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_dev *dev)
}
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_dev *dev)
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;
}
}

10
drivers/acpi/pci_irq.c
View File

@ -406,7 +406,7 @@ int acpi_pci_irq_enable(struct pci_dev *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);
@ -451,7 +451,8 @@ int acpi_pci_irq_enable(struct pci_dev *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);
@ -474,7 +475,7 @@ void acpi_pci_irq_disable(struct pci_dev *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);
@ -496,6 +497,7 @@ void acpi_pci_irq_disable(struct pci_dev *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;
}
}

17
include/linux/pci.h
View File

@ -988,23 +988,6 @@ static inline int pci_is_managed(struct pci_dev *pdev)
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;