linux-stable.git/drivers/staging/nvec, branch v3.2

staging/nvec: fix compilation error in nvec.c

2011-10-17T22:24:11+00:00

This fixes a compilation error in nvec.c due to the missing module.h include.

Signed-off-by: Marc Dietrich 
Cc: Julian Andres Klode 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: send suspend messages synchronously

2011-09-30T00:41:40+00:00

The suspend commands need to be sent using the
synchronous method, otherwise the power gets
disabled before the messages are transferred.

Signed-off-by: Marc Dietrich 
[jak@jak-linux.org: Rewrote commit message]
Signed-off-by: Julian Andres Klode 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Add a udelay(100) to nvec_interrupt

2011-09-30T00:41:39+00:00

As the comment indicates, adding that udelay seems to
improve the stability of the communication, although
it is not known why this is the case.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Add missing includes and reorder them

2011-09-30T00:41:39+00:00

Add the includes that are currently missing in nvec.h
and nvec.c and reorder them alphabetically.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Add battery quirk to ignore incomplete responses

2011-09-30T00:41:38+00:00

The nvec_power system polls nvec for battery information. In some
cases, that part seems to be overloaded and unable to respond
fast in which case it sends an incomplete response. We need to
mark the transfer as completed, though, in order to prevent
endless retries which can kill nvec.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: ps2: Always sample 4 bytes instead of just 1

2011-09-30T00:41:38+00:00

Get 4 bytes of data from nvec at once instead of just a single
byte. This makes the driver more similar to nvidias and might
improve reliability.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Return error in PS2 driver if write fails

2011-09-30T00:41:38+00:00

Return the return value of nvec_write_async() in the methods
returning an int.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Reject incomplete messages

2011-09-30T00:41:37+00:00

Reject incomplete messages, causing the request to be
transmitted again. This should fix various problems
out there.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Handle filled up RX buffers

2011-09-30T00:41:37+00:00

If no RX buffer is available in state 1, jump to state
0 again. This will produce an incredible amount of
warnings, but it is not supposed to happen anyway.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman

staging: nvec: Allow TX buffers only in the upper 75% of the pool

2011-09-30T00:41:36+00:00

Allow TX buffers to be allocated only in the upper 75% of the pool
to avoid a completely filled buffer preventing the driver from
processing responses. This also improves performance, as RX
allocations do not require checking buffers allocated for TX
unless there are more than 16 incoming messages -- which is
highly unlikely.

An earlier version used the lower 75% for TX messages, but
that was considered to be not that effective due to the
overlaps of RX and TX buffers mentioned above.

Signed-off-by: Julian Andres Klode 
Acked-by: Marc Dietrich 
Signed-off-by: Greg Kroah-Hartman