staging: comedi: usbdux: use comedi_async 'scans_done' to detect AI EOA
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 5 Nov 2014 17:21:05 +0000 (10:21 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 5 Nov 2014 22:59:47 +0000 (14:59 -0800)
commit88340999de06facf5f4ae1b9f5b620ee04715a00
treee836ed9c0e925431242701b88cb7d96571e228f4
parent7c5fc7dd4780e3ff923f2117dae78517ede9290b
staging: comedi: usbdux: use comedi_async 'scans_done' to detect AI EOA

Remove the private data member 'ai_sample_count' and use the comedi_async
'scans_done' member to detect the analog input end-of-acquisition.

Move the EOA check so it happens after adding the samples from the current
urb to the async buffer. This prevents the unnecessary resubmit of the urb
when the EOA occurs.

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/usbdux.c