For aesthetics, convert this statis const global variable to a define.
Cleanup the maximum 'size' calc in labpc_suggest_transfer_size(). The modulo
operation will always result in '0'.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/ni_labpc_isadma.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_labpc_isadma.c
b/drivers/staging/comedi/drivers/ni_labpc_isadma.c
index 43e4f99..0ce8aad 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_isadma.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_isadma.c
@@ -29,7 +29,7 @@
#include "ni_labpc_isadma.h"
/* size in bytes of dma buffer */
-static const int dma_buffer_size = 0xff00;
+#define LABPC_ISADMA_BUFFER_SIZE 0xff00
/* utility function that suggests a dma transfer size in bytes */
static unsigned int labpc_suggest_transfer_size(struct comedi_device *dev,
@@ -50,8 +50,8 @@ static unsigned int labpc_suggest_transfer_size(struct
comedi_device *dev,
size = (freq / 3) * sample_size;
/* set a minimum and maximum size allowed */
- if (size > dma_buffer_size)
- size = dma_buffer_size - dma_buffer_size % sample_size;
+ if (size > LABPC_ISADMA_BUFFER_SIZE)
+ size = LABPC_ISADMA_BUFFER_SIZE;
else if (size < sample_size)
size = sample_size;
@@ -178,7 +178,7 @@ void labpc_init_dma_chan(struct comedi_device *dev,
unsigned int dma_chan)
if (request_dma(dma_chan, dev->board_name))
return;
- dma->virt_addr = dma_alloc_coherent(NULL, dma_buffer_size,
+ dma->virt_addr = dma_alloc_coherent(NULL, LABPC_ISADMA_BUFFER_SIZE,
&dma->hw_addr, GFP_KERNEL);
if (!dma->virt_addr) {
free_dma(dma_chan);
@@ -200,7 +200,7 @@ void labpc_free_dma_chan(struct comedi_device *dev)
struct labpc_dma_desc *dma = &devpriv->dma_desc;
if (dma->virt_addr)
- dma_free_coherent(NULL, dma_buffer_size,
+ dma_free_coherent(NULL, LABPC_ISADMA_BUFFER_SIZE,
dma->virt_addr, dma->hw_addr);
if (dma->chan)
free_dma(dma->chan);
--
2.0.3
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