From: Andy Walls <awalls@md.metrocast.net>
Date: Thu, 27 Jan 2011 05:10:42 +0000 (-0300)
Subject: [media] lirc_zilog: Don't acquire the rx->buf_lock in the poll() function
X-Git-Tag: v2.6.39-rc1~86^2~31
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=915e54733de4a36742ab78b4768750ce72662f85;p=pandora-kernel.git

[media] lirc_zilog: Don't acquire the rx->buf_lock in the poll() function

There is no need to take the rx->buf_lock in the the poll() function
as all the underling calls made on objects in the rx->buf lirc_buffer object
are protected by spinlocks.

Corrected a bad error return value in poll(): return POLLERR instead
of -ENODEV.

Added some comments to poll() for when, in the future, I forget what
poll() and poll_wait() are supposed to do.

[Jarod: minor debug spew fix]

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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