diff options
| author | Sinan Kaya <okaya@codeaurora.org> | 2016-10-24 06:31:30 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-10-24 14:18:14 +0200 |
| commit | eeaed4bb5a35591470b545590bb2f26dbe7653a2 (patch) | |
| tree | 7f8d57ee492e989741c1287224511d8285e3a2f8 /drivers/acpi/pci_link.c | |
| parent | Linux 4.9-rc2 (diff) | |
| download | linux-eeaed4bb5a35591470b545590bb2f26dbe7653a2.tar.xz linux-eeaed4bb5a35591470b545590bb2f26dbe7653a2.zip | |
ACPI/PCI/IRQ: assign ISA IRQ directly during early boot stages
We do not want to store the SCI penalty in the acpi_isa_irq_penalty[]
table because acpi_isa_irq_penalty[] only holds ISA IRQ penalties and
there's no guarantee that the SCI is an ISA IRQ. We add in the SCI
penalty as a special case in acpi_irq_get_penalty().
But if we called acpi_penalize_isa_irq() or acpi_irq_penalty_update()
for an SCI that happened to be an ISA IRQ, they stored the SCI
penalty (part of the acpi_irq_get_penalty() return value) in
acpi_isa_irq_penalty[]. Subsequent calls to acpi_irq_get_penalty()
returned a penalty that included *two* SCI penalties.
Fixes: 103544d86976 (ACPI,PCI,IRQ: reduce resource requirements)
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/pci_link.c')
| -rw-r--r-- | drivers/acpi/pci_link.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index c983bf733ad3..6229b022a5d4 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -849,7 +849,7 @@ static int __init acpi_irq_penalty_update(char *str, int used) continue; if (used) - new_penalty = acpi_irq_get_penalty(irq) + + new_penalty = acpi_isa_irq_penalty[irq] + PIRQ_PENALTY_ISA_USED; else new_penalty = 0; @@ -871,7 +871,7 @@ static int __init acpi_irq_penalty_update(char *str, int used) void acpi_penalize_isa_irq(int irq, int active) { if ((irq >= 0) && (irq < ARRAY_SIZE(acpi_isa_irq_penalty))) - acpi_isa_irq_penalty[irq] = acpi_irq_get_penalty(irq) + + acpi_isa_irq_penalty[irq] += (active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING); } |