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| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2008-12-17 06:07:38 +0300 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 22:13:10 +0300 |
| commit | c9ffa5a586a97da4d552f89b8f39eea79a63a612 (patch) | |
| tree | 47e4a6de7df1c5d41bff61f8bfc81eb464b8d2c6 /drivers/pci/hotplug/Makefile | |
| parent | 873392ca514f87eae39f53b6944caf85b1a047cb (diff) | |
| download | linux-c9ffa5a586a97da4d552f89b8f39eea79a63a612.tar.xz | |
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/Makefile | 3 |
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 \ |