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Subject[PATCH 1/1] ACPI: pci_irq, add PRT_ quirk for IBM Bartolo
Date
On IBM Bartolo machines, cards in 00:09.0 are defunct (if use
interrupts). DSDT says that this slot (with function 0, i.e. pin A) is
routed to \_SB_.PCI0.PIB_.LNKB. But it's not, it's wired to LNKC, so
interrupts are misrouted. Add a quirk for this to workaround the
issue.

This error was reported in suse bugzilla at:
https://bugzilla.novell.com/show_bug.cgi?id=595683

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/acpi/pci_irq.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index e4804fb..8e054a4 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -125,6 +125,18 @@ static const struct dmi_system_id hp_t5710[] = {
{ }
};

+/* https://bugzilla.novell.com/show_bug.cgi?id=595683 */
+static const struct dmi_system_id ibm_bartolo[] = {
+ {
+ .ident = "IBM Bartolo",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "IBM CORPORATION"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "4810320"),
+ },
+ },
+ { }
+};
+
struct prt_quirk {
const struct dmi_system_id *system;
unsigned int segment;
@@ -152,6 +164,9 @@ static const struct prt_quirk prt_quirks[] = {
{ hp_t5710, 0, 0, 1, PCI_INTX_PIN('A'),
"\\_SB_.PCI0.LNK1",
"\\_SB_.PCI0.LNK3"},
+ { ibm_bartolo, 0, 0, 9, PCI_INTX_PIN('A'),
+ "\\_SB_.PCI0.PIB_.LNKB",
+ "\\_SB_.PCI0.PIB_.LNKC"},
};

static void do_prt_fixups(struct acpi_prt_entry *entry,
--
1.7.1



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