linux/drivers/base
Zhang Rui 91a6902958 sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes
Well, first of all, I don't want to change so many files either.

What I do:
Adding a new parameter "struct bin_attribute *" in the
.read/.write methods for the sysfs binary attributes.

In fact, only the four lines change in fs/sysfs/bin.c and
include/linux/sysfs.h do the real work.
But I have to update all the files that use binary attributes
to make them compatible with the new .read and .write methods.
I'm not sure if I missed any. :(

Why I do this:
For a sysfs attribute, we can get a pointer pointing to the
struct attribute in the .show/.store method,
while we can't do this for the binary attributes.
I don't know why this is different, but this does make it not
so handy to use the binary attributes as the regular ones.
So I think this patch is reasonable. :)

Who benefits from it:
The patch that exposes ACPI tables in sysfs
requires such an improvement.
All the table binary attributes share the same .read method.
Parameter "struct bin_attribute *" is used to get
the table signature and instance number which are used to
distinguish different ACPI table binary attributes.

Without this parameter, we need to offer different .read methods
for different ACPI table binary attributes.
This is impossible as there are various ACPI tables on different
platforms, and we don't know what they are until they are loaded.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:09:09 -07:00
..
power PM: Do not check parent state in suspend and resume core code 2007-07-11 16:09:02 -07:00
Kconfig devres: device resource management 2007-02-09 17:39:36 -05:00
Makefile Introduce CONFIG_HAS_DMA 2007-05-07 12:12:51 -07:00
attribute_container.c Driver core: include linux/mutex.h from attribute_container.c 2007-07-11 16:09:01 -07:00
base.h Driver core: fix devres_release_all() return value 2007-07-11 16:09:02 -07:00
bus.c sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
class.c driver-core: make devt_attr and uevent_attr static 2007-07-11 16:09:06 -07:00
core.c driver-core: make devt_attr and uevent_attr static 2007-07-11 16:09:06 -07:00
cpu.c Replace remaining references to "driverfs" with "sysfs". 2007-02-17 19:13:42 +01:00
dd.c driver core: fix kernel doc of device_release_driver 2007-07-11 16:09:02 -07:00
devres.c Driver core: fix devres_release_all() return value 2007-07-11 16:09:02 -07:00
dma-mapping.c devres: device resource management 2007-02-09 17:39:36 -05:00
dmapool.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
driver.c Driver core: remove unneeded completion from driver release path 2007-04-27 10:57:29 -07:00
firmware.c remove "struct subsystem" as it is no longer needed 2007-05-02 18:57:59 -07:00
firmware_class.c sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
hypervisor.c [S390] hypfs comment cleanup. 2006-09-20 15:58:44 +02:00
init.c [PATCH] Driver Core: Add /sys/hypervisor when needed 2006-06-21 12:40:48 -07:00
isa.c [PATCH] Driver model: add ISA bus 2006-06-21 12:40:49 -07:00
map.c [PATCH] kobj_map semaphore to mutex conversion 2006-03-20 13:42:58 -08:00
memory.c [PATCH] driver/base/memory.c: handle errors properly 2006-12-07 08:39:36 -08:00
node.c Replace remaining references to "driverfs" with "sysfs". 2007-02-17 19:13:42 +01:00
platform.c drivers/base/platform.c: fix small typo in doc 2007-05-09 08:58:16 +02:00
sys.c sysdev: use mutex instead of semaphore 2007-07-11 16:09:01 -07:00
topology.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
transport_class.c [SCSI] fix transport class corner case after rework 2005-08-28 11:14:06 -05:00