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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2008-12-17 12:07:38 +0900
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-01-07 11:13:10 -0800
commitc9ffa5a586a97da4d552f89b8f39eea79a63a612 (patch)
tree47e4a6de7df1c5d41bff61f8bfc81eb464b8d2c6 /drivers/pci/hotplug/Makefile
parent873392ca514f87eae39f53b6944caf85b1a047cb (diff)
PCI: pciehp: add ACPI based slot detection
There is a problem that some non hot-pluggable PCIe slots are detected as hot-pluggable by pciehp on some platforms. The immediate cause of this problem is that hot-plug capable bit in the Slot Capabilities register is set even for non hot-pluggable slots on those platforms. It seems a BIOS/hardware problem, but we need workaround about that. Some of those platforms define hot-pluggable PCIe slots on ACPI namespace properly, while hot-plug capable bit in the Slot Capabilities register is set improperly. So using ACPI namespace information in pciehp to detect PCIe hot-pluggable slots would be a workaround. This patch adds 'pciehp_detect_mode' module option. When 'acpi' is specified, pciehp uses ACPI namespace information to detect PCIe hot-pluggable slots. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/hotplug/Makefile')
-rw-r--r--drivers/pci/hotplug/Makefile3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index 9bdbe1a6688f..e31fb91652ce 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -55,6 +55,9 @@ pciehp-objs := pciehp_core.o \
pciehp_ctrl.o \
pciehp_pci.o \
pciehp_hpc.o
+ifdef CONFIG_ACPI
+pciehp-objs += pciehp_acpi.o
+endif
shpchp-objs := shpchp_core.o \
shpchp_ctrl.o \