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3 Commits

Author SHA1 Message Date
Bhumika Goyal
c1e950842f ACPI: configfs: make config_item_type const 
Make these structures const as they are either passed to the functions
having the argument as const or stored as a reference in the "ci_type"
const field of a config_item structure.

Done using Coccienlle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
 2017-10-19 16:15:29 +02:00
Jan Kiszka
772bf1e287 ACPI: configfs: Unload SSDT on configfs entry removal 
Call directly into acpica to load a table to obtain its index on return.
We choose the direct call of acpica internal functions to avoid having
to modify its API which is used outside of Linux as well.

Use that index to unload the table again when the corresponding
directory in configfs gets removed. This allows to change SSDTs without
rebooting the system. It also allows to destroy devices again that a
dynamically loaded SSDT created.

This is widely similar to the DT overlay behavior.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2017-06-22 02:43:12 +02:00
Mika Westerberg
fafe5306f2 ACPI: Rename configfs.c to acpi_configfs.c to prevent link error 
If we compile ACPI configfs.c as module it will confuse the linker as it
hides symbols from the actual configfs:

Kernel: arch/x86/boot/bzImage is ready  (#1236)
  MODPOST 5739 modules
ERROR: "configfs_unregister_subsystem" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "configfs_register_subsystem" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_group_init" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_item_init_type_name" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_group_init_type_name" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "configfs_undepend_item" [fs/ocfs2/cluster/ocfs2_nodemanager.ko] undefined!
...

Prevent these by renaming the file to acpi_configfs.c instead.

Reported-by: Scott Lawson <scott.lawson@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2016-07-11 15:13:36 +02:00