tree 24cfe20c1c2558e1c572a91718596f994a75b933
parent cf8c91c3e77cc26c43cfe6fc47e649b685736259
author Mauro Carvalho Chehab <mchehab@redhat.com> 1229475896 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1230637154 -0200

V4L/DVB (9912): em28xx: fix/improve em28xx locking schema

Changes/fixes on em28xx dev->lock:

- em28xx_init_dev() were unlocking without a previous lock;

- some read ioctls need to lock after the removal of KBL, since a write
  may be happening at the same time an ioctl is reading;

- keep the device locked during all device initialization;

- lock/unlock while reading/writing registers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>