Related changes:
 - Modify revelant Kconfig and Makefile accordingly.
 - Change include filenames in code.
 - Remove dependency on CONFIG_SWAP in Kconfig as zram usage
is no longer limited to swap disks.
Signed-off-by: NNitin Gupta <ngupta@vflare.org>
Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Currently, ramzwap devices (/dev/ramzswapX) can only
be used as swap disks since it was hard-coded to consider
only the first request in bio vector.

Now, we iterate over all the segments in an incoming
bio which allows us to handle all kinds of I/O requests.

ramzswap devices can still handle PAGE_SIZE aligned and
multiple of PAGE_SIZE sized I/O requests only. To ensure
that we get always get such requests only, we set following
request_queue attributes to PAGE_SIZE:
 - physical_block_size
 - logical_block_size
 - io_min
 - io_opt

Note: physical and logical block sizes were already set
equal to PAGE_SIZE and that seems to be sufficient to get
PAGE_SIZE aligned I/O.

Since we are no longer limited to handling swap requests
only, the next few patches rename ramzswap to zram. So,
the devices will then be called /dev/zram{0, 1, 2, ...}

Usage/Examples:
 1) Use as /tmp storage
 - mkfs.ext4 /dev/zram0
 - mount /dev/zram0 /tmp

 2) Use as swap:
 - mkswap /dev/zram0
 - swapon /dev/zram0 -p 10 # give highest priority to zram0

Performance:

 - I/O benchamark done with 'dd' command. Details can be
found here:
http://code.google.com/p/compcache/wiki/zramperf
Summary:
 - Maximum read speed (approx):
   - ram disk: 1200 MB/sec
   - zram disk: 600 MB/sec
 - Maximum write speed (approx):
   - ram disk: 500 MB/sec
   - zram disk: 160 MB/sec

Issues:

 - Double caching: We can potentially waste memory by having
two copies of a page -- one in page cache (uncompress) and
second in the device memory (compressed). However, during
reclaim, clean page cache pages are quickly freed, so this
does not seem to be a big problem.

 - Stale data: Not all filesystems support issuing 'discard'
requests to underlying block devices. So, if such filesystems
are used over zram devices, we can accumulate lot of stale
data in memory. Even for filesystems to do support discard
(example, ext4), we need to see how effective it is.

 - Scalability: There is only one (per-device) de/compression
buffer stats. This can lead to significant contention, especially
when used for generic (non-swap) purposes.
Signed-off-by: NNitin Gupta <ngupta@vflare.org>
Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Older mechanism of counting the number of protocols
registered with ST was slow, in-efficient.
It used to check the protocol data for NULL for each
registration/unregistration.

With this change, counting protocols in maintained by
a single counter protos_registered.

Counting protocols is not just for debug purposes
Signed-off-by: NNaveen Jain <naveen_jain@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Add version information to be available under the sysfs group
for kim.
Signed-off-by: NNaveen Jain <naveen_jain@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove the older way of communicating with user-space
daemon UIM.
The older way involved creating of a new kobj and pid
sysfs file under it, and sending signal using that pid.

Now we communicate via rfkill to user-space UIM.

Background: UIM is the user-space daemon which upon
notification from ldisc driver, opens the tty, sets
default baud and then installs (tiocsetd) the ldisc.
Signed-off-by: NNaveen Jain <naveen_jain@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Update the TODO of TI-ST to make sure it reflects current list
of activities that need to be done.
Also point it out to the user-space app code relevant to it.
Signed-off-by: NPavan Savoy <pavan_savoy@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This adds the easycap USB video adapter driver to
the staging directory.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Rename driver struct and callbacks to vt6655_* instead of device_* and add
__devinit/__devexit directives.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is a patch to the 80211mgr.c file that fixes up warnings
found by the checkpatch.pl tool
Signed-off-by: NTimofey Trofimov <tumoxep@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fix this build error:

  drivers/staging/vt6656/built-in.o: In function `rotr1':
  (.text+0x1a878): multiple definition of `rotr1'
  drivers/staging/rt2870/built-in.o:(.text+0x106c2): first defined here
  drivers/staging/vt6656/built-in.o: In function `tkip_sbox':
  (.text+0x1a848): multiple definition of `tkip_sbox'
  drivers/staging/rt2870/built-in.o:(.text+0x10697): first defined here
  drivers/staging/vt6656/built-in.o: In function `xor_32':
  (.text+0x1ec24): multiple definition of `xor_32'
  drivers/staging/rt2870/built-in.o:(.text+0x111c4): first defined here
  drivers/staging/vt6656/built-in.o: In function `xor_128':
  (.text+0x1ec00): multiple definition of `xor_128'
  drivers/staging/rt2870/built-in.o:(.text+0x111dd): first defined here
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Resolved whitespace-related checkpatch findings in .h files
Signed-off-by: NAndres More <more.andres@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Resolved checkpatch findings, but some long lines warnings.
	ERROR: space required before the open parenthesis '('
	ERROR: spaces required around that
Signed-off-by: NAndres More <more.andres@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Commit 902d2411 converted U32 to u32
which you would think would be just fine.  Unfortunatly, it seems that
VIA only builds their code on a 32bit processor (which makes sense if
you think about it), but this doesn't work on x86-64.  So fix up the few
places where this really wanted to be an unsigned long width.

Cc: Charles Clément <caratorn@gmail.com>
Cc: Forest Bond <forest@alittletooquiet.net>,
Cc: Andres More <more.andres@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Use unsigned long * instead.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Use unsigned short * instead.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Use unsigned char * instead.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove custom macro for unsigned 32-bit integers, replace by u32.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove custom macro for unsigned 16-bit integers.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove custom macro for unsigned 8-bit integers.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove custom macro for signed 8-bit integers.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Calcu_LinkQual is already defined a couple lines earlier.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Replace custom macro IS_ETH_ADDRESS_EQUAL by compare_ether_addr from
<linux/etherdevice.h>.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Replace custom macro IS_NULL_ADDRESS by is_zero_ether_addr from
<linux/etherdevice.h>.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Replace custom macro IS_BROADCAST_ADDRESS by is_broadcast_ether_addr
from <linux/etherdevice.h>.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Replace custom macro IS_MULTICAST_ADDRESS by is_multicast_ether_addr
from <linux/etherdevice.h>.
Remove linux/if_ether.h include as it is included in
linux/etherdevice.h already.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Replace custom minimum packet lenght definition MIN_PACKET_LEN by
ETH_ZLEN from <linux/if_ether.h>.
Signed-off-by: NCharles Clément <caratorn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>