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

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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>

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This commit is contained in:

Mauro Carvalho Chehab 2008-12-16 22:04:56 -03:00

parent cf8c91c3e7

commit efc52a9484

1 changed files with 43 additions and 12 deletions

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drivers/media/video/em28xx/em28xx-video.c

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