The field driver_info will be used to handle the specific per webcam
information.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

gspca:    Protect dq_callback() against simultaneous USB exchanges.
          Temporary buffer for USB exchanges added in the device struct.
(all)     Use a temporary buffer for all USB exchanges.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

main:     Parameter comp_fac removed.
main, pac207:
          get_buff_size op removed.
(all)     v4l2_pix_format in each subdriver.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

spca561:  Input buffer may be changed on reg write.
(all sd): Cleanup code, 'const' added.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Done for conex, etoms, pac7311, sonixj, t613 and tv8532.
Code cleanup for some other subdrivers.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

main, etoms, mars, pac207, pac7311, sonixb, sonixj, spca500, spca505:
	 Cleanup source.
sunplus: Compilation error when VIDEO_ADV_DEBUG set.
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

- remaning subdrivers added
- remove the decoding helper and some specific frame decodings
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>