| commit | e3b87f8a9d5a61f6367c66d1bb0a4e19d251194d | |
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | |
| Mon, 21 Sep 2009 19:30:11 +0000 (21 19:30 +0000) | ||
| committer | Len Brown <len.brown@intel.com> | |
| Fri, 25 Sep 2009 18:24:32 +0000 (25 14:24 -0400) | ||
| tree | 9054b93f90f9de3b536f656727c947c1d34b4519 | treesnapshot (tar.gz zip) |
| parent | 778cbc1d3abd434b6d882714630235e3711bb15b | commitdiff |
ACPI: handle re-enumeration, when acpi_devices might already exist
acpi_bus_scan() traverses the namespace to enumerate devices and uses
acpi_add_single_object() to create acpi_devices. When the platform
notifies us of a hot-plug event, we need to traverse part of the namespace
again to figure out what appeared or disappeared. (We don't yet call
acpi_bus_scan() during hot-plug, but I plan to do that in the future.)
This patch makes acpi_add_single_object() notice when we already have
an acpi_device, so we don't need to make a new one.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
acpi_bus_scan() traverses the namespace to enumerate devices and uses
acpi_add_single_object() to create acpi_devices. When the platform
notifies us of a hot-plug event, we need to traverse part of the namespace
again to figure out what appeared or disappeared. (We don't yet call
acpi_bus_scan() during hot-plug, but I plan to do that in the future.)
This patch makes acpi_add_single_object() notice when we already have
an acpi_device, so we don't need to make a new one.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| drivers/acpi/scan.c | diffblobblamehistory |