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staging: comedi: mite: tidy up local variables in mite_sync_output_dma()

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Tidy up the local variables so that the comedi_cmd is accessed as a pointer
instead of getting to it from the comedi_async pointer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-05-27 10:30:52 -07:00 committed by Greg Kroah-Hartman
parent d1462b9430
commit 45c9db9191
1 changed files with 6 additions and 8 deletions
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14
drivers/staging/comedi/drivers/mite.c
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@ -562,21 +562,19 @@ int mite_sync_output_dma(struct mite_channel *mite_chan,
struct comedi_subdevice *s)
{
struct comedi_async *async = s->async;
int count;
struct comedi_cmd *cmd = &async->cmd;
u32 stop_count = cmd->stop_arg * cfc_bytes_per_scan(s);
unsigned int old_alloc_count = async->buf_read_alloc_count;
u32 nbytes_ub, nbytes_lb;
unsigned int old_alloc_count;
u32 stop_count = async->cmd.stop_arg * cfc_bytes_per_scan(s);
int count;
old_alloc_count = async->buf_read_alloc_count;
/* read alloc as much as we can */
comedi_buf_read_alloc(s, async->prealloc_bufsz);
nbytes_lb = mite_bytes_read_from_memory_lb(mite_chan);
if (async->cmd.stop_src == TRIG_COUNT &&
(int)(nbytes_lb - stop_count) > 0)
if (cmd->stop_src == TRIG_COUNT && (int)(nbytes_lb - stop_count) > 0)
nbytes_lb = stop_count;
nbytes_ub = mite_bytes_read_from_memory_ub(mite_chan);
if (async->cmd.stop_src == TRIG_COUNT &&
(int)(nbytes_ub - stop_count) > 0)
if (cmd->stop_src == TRIG_COUNT && (int)(nbytes_ub - stop_count) > 0)
nbytes_ub = stop_count;
if ((int)(nbytes_ub - old_alloc_count) > 0) {
dev_warn(s->device->class_dev, "mite: DMA underrun\n");