Module: xenomai-head
Branch: master
Commit: 252538ed93089f58263629129d39fadd3199548a
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=252538ed93089f58263629129d39fadd3199548a
Author: Alexis Berlemont <alexis.berlem...@gmail.com>
Date: Sat May 23 05:23:22 2009 +0200
Slightly optimize the function comedi_get_chan()
---
ksrc/drivers/comedi/buffer.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/ksrc/drivers/comedi/buffer.c b/ksrc/drivers/comedi/buffer.c
index 305efd9..8187042 100644
--- a/ksrc/drivers/comedi/buffer.c
+++ b/ksrc/drivers/comedi/buffer.c
@@ -152,15 +152,21 @@ int comedi_get_chan(comedi_dev_t * dev, unsigned int
type, int idx_subd)
in this command... */
for (i = 0; i < cmd->nb_chan; i++)
tmp_size += dev->transfer->subds[idx]->chan_desc->
- chans[CR_CHAN(cmd->chan_descs[i])].nb_bits / 8;
+ chans[CR_CHAN(cmd->chan_descs[i])].nb_bits;
+
+ /* Translation bits -> bytes */
+ tmp_size /= 8;
tmp_count = dev->transfer->bufs[idx]->mng_count % tmp_size;
+ /* Translation bytes -> bits */
+ tmp_count *= 8;
+
/* ...and find the channel the last munged sample
was related with */
for (i = 0; tmp_count > 0 && i < cmd->nb_chan; i++)
tmp_count -= dev->transfer->subds[idx]->chan_desc->
- chans[CR_CHAN(cmd->chan_descs[i])].nb_bits / 8;
+ chans[CR_CHAN(cmd->chan_descs[i])].nb_bits;
if (tmp_count == 0)
return i;
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