diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-05-14 14:23:12 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-16 16:25:55 -0700 |
| commit | 4bc839f25044f75d7b59d5481c404ce20563ef86 (patch) | |
| tree | 283d7b666963237e4795fe8453918aeb14defbe8 /drivers/staging/comedi/drivers/dt9812.c | |
| parent | 0ec77d3499b10c75b279080a79a79e35e51b70a6 (diff) | |
staging: comedi: dt9812: pass the comedi_device * to dt9812_digital_in()
For aesthetic reasons, instead of passing the 'slot' pointer, pass the
comedi_device pointer to this function and rename the local var 'result'
to simply 'ret'.
Remove the commented out printk().
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/dt9812.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/dt9812.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/staging/comedi/drivers/dt9812.c b/drivers/staging/comedi/drivers/dt9812.c index 17a738c86b88..8bd773a15496 100644 --- a/drivers/staging/comedi/drivers/dt9812.c +++ b/drivers/staging/comedi/drivers/dt9812.c @@ -385,31 +385,30 @@ static int dt9812_rmw_multiple_registers(struct usb_dt9812 *dev, int reg_count, &cmd, 32, &count, HZ * 1); } -static int dt9812_digital_in(struct slot_dt9812 *slot, u8 *bits) +static int dt9812_digital_in(struct comedi_device *dev, u8 *bits) { - int result = -ENODEV; + struct dt9812_private *devpriv = dev->private; + struct slot_dt9812 *slot = devpriv->slot; + int ret = -ENODEV; down(&slot->mutex); if (slot->usb) { u8 reg[2] = { F020_SFR_P3, F020_SFR_P1 }; u8 value[2]; - result = dt9812_read_multiple_registers(slot->usb, 2, reg, - value); - if (result == 0) { + ret = dt9812_read_multiple_registers(slot->usb, 2, reg, value); + if (ret == 0) { /* * bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital * input port bit 3 in F020_SFR_P1 is bit 7 in the * digital input port */ *bits = (value[0] & 0x7f) | ((value[1] & 0x08) << 4); - /* printk("%2.2x, %2.2x -> %2.2x\n", - value[0], value[1], *bits); */ } } up(&slot->mutex); - return result; + return ret; } static int dt9812_digital_out(struct slot_dt9812 *slot, u8 bits) @@ -645,12 +644,11 @@ static int dt9812_di_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - struct dt9812_private *devpriv = dev->private; unsigned int channel = CR_CHAN(insn->chanspec); int n; u8 bits = 0; - dt9812_digital_in(devpriv->slot, &bits); + dt9812_digital_in(dev, &bits); for (n = 0; n < insn->n; n++) data[n] = ((1 << channel) & bits) != 0; return n; |