From: Frank Schaefer <fschaefer.oss@googlemail.com>
Date: Sat, 8 Dec 2012 14:31:24 +0000 (-0300)
Subject: [media] em28xx: refactor get_next_buf() and use it for vbi data, too
X-Git-Tag: v3.9-rc1~93^2~418
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24a6d8497f7e64a8870018ed1ed561755b2075ec;p=pandora-kernel.git

[media] em28xx: refactor get_next_buf() and use it for vbi data, too

get_next_buf() and vbi_get_next_buf() do exactly the same just with a
different dma queue and buffer. Saving the new buffer pointer back to the
device struct in em28xx_urb_data_copy() instead of doing this from inside
these functions makes it possible to get rid of one of them.
Also refactor the function parameters and return type:
- pass a pointer to struct em28xx as parameter (instead of obtaining the
  pointer from the dma queue pointer with the container_of macro) like we do
  it in all other functions
- instead of using a pointer-pointer, return the pointer to the new buffer
  as return value of the function

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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