staging: comedi: adv_pci1710: change boardinfo 'fifo_half_size' to 'has_large_fifo'
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 20 Jan 2015 21:53:06 +0000 (14:53 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 25 Jan 2015 11:59:10 +0000 (19:59 +0800)
commit7bd428c43437ddd401af6b3214051f89628ac12f
tree8bc86a6c963bc717fb5aea1d913382bf222de71d
parentabd2839c596cd598a52f716a9e409d000a40235b
staging: comedi: adv_pci1710: change boardinfo 'fifo_half_size' to 'has_large_fifo'

The boards supported by this driver have a 4K or 1K FIFO that is used when reading
analog input samples when running an async command. The maximum number of samples
in the FIFO is half the FIFO size due to the 2 bytes/sample (12-bit resolution).

For aesthetics, change the 'fifo_half_size' member to a bit-field flag 'has_large_fifo'
and add a new member to the private data to hold the 'max_samples' available in the
FIFO. Refactor the board attach and pci1710_handle_fifo() accordingly.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/adv_pci1710.c