From bf4063e6f4a33b8f7ec067e6f180b1daa03c951a Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Thu, 5 Dec 2013 16:54:16 -0700 Subject: [PATCH] staging: comedi: pcmuio: tidy up pcmuio_start_intr() Refactor this function a bit to remove the need for an extra indent level and cleanup some of the odd line breaks. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcmuio.c | 44 ++++++++++++++----------- 1 file changed, 24 insertions(+), 20 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c index edcac2679c40..a8f390f7a874 100644 --- a/drivers/staging/comedi/drivers/pcmuio.c +++ b/drivers/staging/comedi/drivers/pcmuio.c @@ -410,34 +410,38 @@ static int pcmuio_start_intr(struct comedi_device *dev, struct pcmuio_private *devpriv = dev->private; int asic = pcmuio_subdevice_to_asic(s); struct pcmuio_asic *chip = &devpriv->asics[asic]; + struct comedi_cmd *cmd = &s->async->cmd; + unsigned int bits = 0; + unsigned int pol_bits = 0; + int i; if (!chip->continuous && chip->stop_count == 0) { /* An empty acquisition! */ s->async->events |= COMEDI_CB_EOA; chip->active = 0; return 1; - } else { - struct comedi_cmd *cmd = &s->async->cmd; - unsigned bits = 0, pol_bits = 0, n; - - chip->enabled_mask = 0; - chip->active = 1; - if (cmd->chanlist) { - for (n = 0; n < cmd->chanlist_len; n++) { - bits |= (1U << CR_CHAN(cmd->chanlist[n])); - pol_bits |= (CR_AREF(cmd->chanlist[n]) - || CR_RANGE(cmd-> - chanlist[n]) ? 1U : 0U) - << CR_CHAN(cmd->chanlist[n]); - } - } - bits &= ((0x1 << s->n_chan) - 1); - chip->enabled_mask = bits; + } - /* set pol and enab intrs for this subdev.. */ - pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); - pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); + chip->enabled_mask = 0; + chip->active = 1; + if (cmd->chanlist) { + for (i = 0; i < cmd->chanlist_len; i++) { + unsigned int chanspec = cmd->chanlist[i]; + unsigned int chan = CR_CHAN(chanspec); + unsigned int range = CR_RANGE(chanspec); + unsigned int aref = CR_AREF(chanspec); + + bits |= (1 << chan); + pol_bits |= ((aref || range) ? 1 : 0) << chan; + } } + bits &= ((1 << s->n_chan) - 1); + chip->enabled_mask = bits; + + /* set pol and enab intrs for this subdev.. */ + pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); + pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); + return 0; } -- 2.20.1