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Staging: comedi: adv_pci1710: Correct AI scan count and channel checks 

For AI commands, the internal channel list used to check incoming
data was only set up partially if the channel list contained
repeats.  Set it up fully.  Also the current scan position was not
updated properly when moving a block of data from the FIFO unless
a whole number of scans was moved.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Ian Abbott 2010-01-20 13:04:47 +00:00 committed by Greg Kroah-Hartman
parent b3559cb1aa
commit 61283d227c
1 changed files with 7 additions and 0 deletions
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7
drivers/staging/comedi/drivers/adv_pci1710.c
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@ -724,6 +724,7 @@ static int move_block_from_fifo(struct comedi_device *dev,
devpriv->ai_act_scan++;
}
}
s->async->cur_chan = j;
DPRINTK("adv_pci1710 EDBG: END: move_block_from_fifo(...)\n");
return 0;
}
@ -1230,6 +1231,12 @@ static void setup_channel_list(struct comedi_device *dev,
DPRINTK("GS: %2d. [%4x]=%4x %4x\n", i, chanprog, range,
devpriv->act_chanlist[i]);
}
#ifdef PCI171x_PARANOIDCHECK
for ( ; i < n_chan; i++) { /* store remainder of channel list */
devpriv->act_chanlist[i] =
(CR_CHAN(chanlist[i]) << 12) & 0xf000;
}
#endif
devpriv->ai_et_MuxVal =
CR_CHAN(chanlist[0]) | (CR_CHAN(chanlist[seglen - 1]) << 8);