[PATCH 09/20] ACPI: PCI: use 1-based encoding for _PRT quirks

Bjorn Helgaas
2008-12-09T04:30:46Z

Use the PCI INTx pin encoding (1=INTA, 2=INTB, etc) for _PRT quirks.
Then we can simply compare "entry->pin == quirk->pin".

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
---
drivers/acpi/pci_irq.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 0036055..eea15fd 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -147,19 +147,21 @@ struct prt_quirk {
char *actual_source;
};

+#define PCI_INTX_PIN(c) (c - 'A' + 1)
+
/*
* These systems have incorrect _PRT entries. The BIOS claims the PCI
* interrupt at the listed segment/bus/device/pin is connected to the first
* link device, but it is actually connected to the second.
*/
static struct prt_quirk prt_quirks[] = {
- { medion_md9580, 0, 0, 9, 'A',
+ { medion_md9580, 0, 0, 9, PCI_INTX_PIN('A'),
"\\_SB_.PCI0.ISA_.LNKA",
"\\_SB_.PCI0.ISA_.LNKB"},
- { dell_optiplex, 0, 0, 0xd, 'A',
+ { dell_optiplex, 0, 0, 0xd, PCI_INTX_PIN('A'),
"\\_SB_.LNKB",
"\\_SB_.LNKA"},
- { hp_t5710, 0, 0, 1, 'A',
+ { hp_t5710, 0, 0, 1, PCI_INTX_PIN('A'),
"\\_SB_.PCI0.LNK1",
"\\_SB_.PCI0.LNK3"},
};
@@ -181,7 +183,7 @@ do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt)
entry->id.segment == quirk->segment &&
entry->id.bus == quirk->bus &&
entry->id.device == quirk->device &&
- pin_name(entry->pin) == quirk->pin &&
+ entry->pin == quirk->pin &&
!strcmp(prt->source, quirk->source) &&
strlen(prt->source) >= strlen(quirk->actual_source)) {
printk(KERN_WARNING PREFIX "firmware reports "