video: udlfb: (not only) Logging cleanup

This patchset is a side product of debugging on unreliable USB host where devices saw a lot of disconnects. It turned out that udlfb logging is just too noisy to be usefull as produced syslog is hard to read.

Hence this attempt to clean things up.

Comments and suggestions welcome and appreciated, as always.

Ladislav Michl (6):
video: udlfb: Do not name private data 'dev'
video: udlfb: Remove unnecessary 'return'
video: udlfb: Remove unnecessary local variable
video: udlfb: Delete error messages for failed allocations
video: udlfb: Remove redundant gdev variable
video: udlfb: Switch from the pr_*() to the dev_*() logging functions

 drivers/video/fbdev/udlfb.c | 617 ++++++++++++++++++++------------------------
 include/video/udlfb.h       |   3 +-
 2 files changed, 284 insertions(+), 336 deletions(-)