tree f2b5603fb69a9e7cbf16b8015a6e0aa9eb94a749
parent fbde31d54b729e4aac1d06375d4365318fd88675
author Mauro Carvalho Chehab <mchehab@infradead.org> 1208109501 -0300
committer Mauro Carvalho Chehab <mchehab@infradead.org> 1209056928 -0300

V4L/DVB (7552): videbuf-vmalloc: Corrects mmap code

There were some bugs on videobuf-vmalloc.

Basically, remap were called with a wrong parameter. Due to that, a later remap
were needed, generating the need of some hacks on videobuf-vmalloc and
videobuf-core.

This patch fixes the remap and removes the hacks.

TODO:

- V4L2_MEMORY_USERPTR is not implemented yet. This method should be
  properly implemented, in order to work with a few userspace applications.

- The driver also doesn't implement V4L2_MEMORY_OVERLAY. This method is used
  only by a few applications, and are becaming obsolete, due to the increment
  of cpu performance. So, most apps prefer to retrieve data to an internal
  buffer, doing some processing like de-interlacing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>