linux/drivers/media
Tobias Lorenz 0e3301ec23 V4L/DVB (7091): radio-si470x improvements and seldom problem fixed in tuning functions
I updated the radio-si470x driver another time. Here are the commented history entries:

- number of seek_retries changed to tune_timeout
The last versions checked for the end of frequency tuning by polling a si470x register.
Therefore polling depended on the usb utilization.
This was changed to have a constant timeout now.

- fixed problem with incomplete tune operations by own buffers
The last version used a shared buffer to assembly the USB HID reports.
It sometimes happened, that multiple functions were modifing this buffer simultanuously.
When sending such reports, the hardware returned USB stalls (-EPIPE).
Now buffers of the correct size (smaller than before) are allocated as local variables.

- optimization of variables
The size of some variables has been reduced to allow the compiler to generate more optimized code.

- improved error logging
At some important location, error checking was improved.
Especially the usb transfers to access si470x registers and the tuning functions were modified.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:59 -03:00
..
common V4L/DVB (7133): Fix Kconfig dependencies 2008-02-18 11:14:53 -03:00
dvb V4L/DVB (7076): bt878: include KERN_ facility level 2008-02-18 11:14:53 -03:00
radio V4L/DVB (7091): radio-si470x improvements and seldom problem fixed in tuning functions 2008-02-18 11:14:59 -03:00
video V4L/DVB (7090): V4L: stkwebcam: use v4l_compat_ioctl32 2008-02-18 11:14:58 -03:00
Kconfig V4L/DVB (7133): Fix Kconfig dependencies 2008-02-18 11:14:53 -03:00
Makefile V4L/DVB (6814): Makefile: always enter video/ 2007-12-13 17:58:05 -02:00