ACPI: fix Medion _PRT quirk (use "ISA_", not "ISA")

This fixes the builtin RTL8139 NIC on the Medion MD9580-F laptop.  The
BIOS reports the interrupt routing incorrectly.  I recently added a
quirk to work around this, and this patch fixes a typo in the quirk.

We pad every ACPI pathname component to four characters, so ".ISA." will
never match anything.  We need ".ISA_." instead.

Thank you Johann-Nikolaus Andreae <johann-nikolaus.andreae@nacs.de>
for patiently testing this patch.

See http://bugzilla.kernel.org/show_bug.cgi?id=4773

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 7af414a3c63e..89022a74faee 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -131,8 +131,8 @@ struct prt_quirk {
  */
 static struct prt_quirk prt_quirks[] = {
         { medion_md9580, 0, 0, 9, 'A',
-                "\\_SB_.PCI0.ISA.LNKA",
-                "\\_SB_.PCI0.ISA.LNKB"},
+                "\\_SB_.PCI0.ISA_.LNKA",
+                "\\_SB_.PCI0.ISA_.LNKB"},
         { dell_optiplex, 0, 0, 0xd, 'A',
                 "\\_SB_.LNKB",
                 "\\_SB_.LNKA"},