The 'SCAN_ENA' bit in the mode register needs to be set if the chanlist has more than 1 channel. Set the bit in apci3120_set_chanlist() if needed. The callers write the mode register after setting any additional bits, Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> Cc: Ian Abbott <abbotti@xxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/comedi/drivers/addi_apci_3120.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c b/drivers/staging/comedi/drivers/addi_apci_3120.c index f258ceb..ec66233 100644 --- a/drivers/staging/comedi/drivers/addi_apci_3120.c +++ b/drivers/staging/comedi/drivers/addi_apci_3120.c @@ -307,6 +307,10 @@ static void apci3120_set_chanlist(struct comedi_device *dev, /* set scan length (PR) and scan start (PA) */ devpriv->ctrl = APCI3120_CTRL_PR(n_chan - 1) | APCI3120_CTRL_PA(0); outw(devpriv->ctrl, dev->iobase + APCI3120_CTRL_REG); + + /* enable chanlist scanning if necessary */ + if (n_chan > 1) + devpriv->mode |= APCI3120_MODE_SCAN_ENA; } #include "addi-data/hwdrv_apci3120.c" -- 2.0.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
