diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/amplc_pci230.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/amplc_pci230.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c index 43059c25d5e..a97bbd6ca3d 100644 --- a/drivers/staging/comedi/drivers/amplc_pci230.c +++ b/drivers/staging/comedi/drivers/amplc_pci230.c @@ -573,14 +573,14 @@ static const struct comedi_lrange pci230_ao_range = { 2, { /* PCI230 daccon bipolar flag for each analogue output range. */ static const unsigned char pci230_ao_bipolar[2] = { 0, 1 }; -static short pci230_ai_read(struct comedi_device *dev) +static unsigned short pci230_ai_read(struct comedi_device *dev) { const struct pci230_board *thisboard = comedi_board(dev); struct pci230_private *devpriv = dev->private; - short data; + unsigned short data; /* Read sample. */ - data = (short)inw(dev->iobase + PCI230_ADCDATA); + data = inw(dev->iobase + PCI230_ADCDATA); /* PCI230 is 12 bit - stored in upper bits of 16 bit register (lower * four bits reserved for expansion). */ /* PCI230+ is 16 bit AI. */ @@ -595,7 +595,7 @@ static short pci230_ai_read(struct comedi_device *dev) } static inline unsigned short pci230_ao_mangle_datum(struct comedi_device *dev, - short datum) + unsigned short datum) { const struct pci230_board *thisboard = comedi_board(dev); struct pci230_private *devpriv = dev->private; @@ -609,11 +609,12 @@ static inline unsigned short pci230_ao_mangle_datum(struct comedi_device *dev, * four bits reserved for expansion). */ /* PCI230+ is also 12 bit AO. */ datum <<= (16 - thisboard->ao_bits); - return (unsigned short)datum; + return datum; } static inline void pci230_ao_write_nofifo(struct comedi_device *dev, - short datum, unsigned int chan) + unsigned short datum, + unsigned int chan) { struct pci230_private *devpriv = dev->private; @@ -627,8 +628,8 @@ static inline void pci230_ao_write_nofifo(struct comedi_device *dev, PCI230_DACOUT2)); } -static inline void pci230_ao_write_fifo(struct comedi_device *dev, short datum, - unsigned int chan) +static inline void pci230_ao_write_fifo(struct comedi_device *dev, + unsigned short datum, unsigned int chan) { struct pci230_private *devpriv = dev->private; @@ -1165,7 +1166,7 @@ static void pci230_handle_ao_nofifo(struct comedi_device *dev, struct comedi_subdevice *s) { struct pci230_private *devpriv = dev->private; - short data; + unsigned short data; int i, ret; struct comedi_async *async = s->async; struct comedi_cmd *cmd = &async->cmd; @@ -1258,7 +1259,7 @@ static int pci230_handle_ao_fifo(struct comedi_device *dev, /* Process scans. */ for (n = 0; n < num_scans; n++) { for (i = 0; i < cmd->chanlist_len; i++) { - short datum; + unsigned short datum; comedi_buf_get(async, &datum); pci230_ao_write_fifo(dev, datum, |