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staging: comedi: dt3000: change return type of dt3k_send_cmd to void

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None of the callers check the return value. Just make it a void.

Flip the status check at the end of the function to check for an
error before outputing the dev_dbg(). Use __func__ for the function
name in the message.

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>
This commit is contained in:
H Hartley Sweeten
2012-10-25 17:27:12 -07:00
committed by Greg Kroah-Hartman
parent d3bf2177c8
commit 0014048e09
1 changed files with 7 additions and 12 deletions
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19
drivers/staging/comedi/drivers/dt3000.c
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@@ -280,7 +280,7 @@ static void debug_intr_flags(unsigned int flags)
#define TIMEOUT 100
static int dt3k_send_cmd(struct comedi_device *dev, unsigned int cmd)
static void dt3k_send_cmd(struct comedi_device *dev, unsigned int cmd)
{
struct dt3k_private *devpriv = dev->private;
int i;
@@ -294,13 +294,10 @@ static int dt3k_send_cmd(struct comedi_device *dev, unsigned int cmd)
break;
udelay(1);
}
if ((status & DT3000_COMPLETION_MASK) == DT3000_NOERROR)
return 0;
dev_dbg(dev->class_dev, "dt3k_send_cmd() timeout/error status=0x%04x\n",
status);
return -ETIME;
if ((status & DT3000_COMPLETION_MASK) != DT3000_NOERROR)
dev_dbg(dev->class_dev, "%s: timeout/error status=0x%04x\n",
__func__, status);
}
static unsigned int dt3k_readsingle(struct comedi_device *dev,
@@ -365,10 +362,9 @@ static void dt3k_ai_empty_fifo(struct comedi_device *dev,
static int dt3k_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
{
struct dt3k_private *devpriv = dev->private;
int ret;
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_STOP);
dt3k_send_cmd(dev, CMD_STOP);
writew(0, devpriv->io_addr + DPR_Int_Mask);
@@ -560,7 +556,6 @@ static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
unsigned int chan, range, aref;
unsigned int divider;
unsigned int tscandiv;
int ret;
unsigned int mode;
for (i = 0; i < cmd->chanlist_len; i++) {
@@ -595,7 +590,7 @@ static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
writew(AI_FIFO_DEPTH / 2, devpriv->io_addr + DPR_Params(7));
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_CONFIG);
dt3k_send_cmd(dev, CMD_CONFIG);
writew(DT3000_ADFULL | DT3000_ADSWERR | DT3000_ADHWERR,
devpriv->io_addr + DPR_Int_Mask);
@@ -603,7 +598,7 @@ static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
debug_n_ints = 0;
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_START);
dt3k_send_cmd(dev, CMD_START);
return 0;
}