`labpc_suggest_transfer_size()` has a parameter of type `struct
comedi_cmd` passed by value. Change it to pass by pointer reference.
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
drivers/staging/comedi/drivers/ni_labpc.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index 5b7a2a9..63c5111 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -247,7 +247,7 @@ static int labpc_eeprom_write_insn(struct comedi_device *dev,
static void labpc_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd,
enum scan_mode scan_mode);
#ifdef CONFIG_ISA_DMA_API
-static unsigned int labpc_suggest_transfer_size(struct comedi_cmd cmd);
+static unsigned int labpc_suggest_transfer_size(const struct comedi_cmd *cmd);
#endif
static int labpc_dio_mem_callback(int dir, int port, int data,
unsigned long arg);
@@ -1321,7 +1321,7 @@ static int labpc_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
set_dma_addr(devpriv->dma_chan,
virt_to_bus(devpriv->dma_buffer));
/* set appropriate size of transfer */
- devpriv->dma_transfer_size = labpc_suggest_transfer_size(*cmd);
+ devpriv->dma_transfer_size = labpc_suggest_transfer_size(cmd);
if (cmd->stop_src == TRIG_COUNT &&
devpriv->count * sample_size < devpriv->dma_transfer_size) {
devpriv->dma_transfer_size =
@@ -1774,13 +1774,13 @@ static int labpc_eeprom_write_insn(struct comedi_device *dev,
#ifdef CONFIG_ISA_DMA_API
/* utility function that suggests a dma transfer size in bytes */
-static unsigned int labpc_suggest_transfer_size(struct comedi_cmd cmd)
+static unsigned int labpc_suggest_transfer_size(const struct comedi_cmd *cmd)
{
unsigned int size;
unsigned int freq;
- if (cmd.convert_src == TRIG_TIMER)
- freq = 1000000000 / cmd.convert_arg;
+ if (cmd->convert_src == TRIG_TIMER)
+ freq = 1000000000 / cmd->convert_arg;
/* return some default value */
else
freq = 0xffffffff;
--
1.7.12
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