Module: xenomai-head
Branch: master
Commit: 5a4712e684bd0a3022307da03504948ab3488907
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=5a4712e684bd0a3022307da03504948ab3488907
Author: Alexis Berlemont <alexis.berlem...@gmail.com>
Date: Fri Sep 18 23:49:09 2009 +0200
Add some basic check in comedi_get_cmd()
---
ksrc/drivers/comedi/buffer.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/ksrc/drivers/comedi/buffer.c b/ksrc/drivers/comedi/buffer.c
index 5f6dd9e..edd9807 100644
--- a/ksrc/drivers/comedi/buffer.c
+++ b/ksrc/drivers/comedi/buffer.c
@@ -99,6 +99,11 @@ int comedi_alloc_buffer(comedi_buf_t * buf_desc)
comedi_cmd_t *comedi_get_cmd(comedi_subd_t *subd)
{
comedi_dev_t *dev = subd->dev;
+
+ /* Check that subdevice supports commands */
+ if (dev->transfer.bufs == NULL)
+ return NULL;
+
return dev->transfer.bufs[subd->idx]->cur_cmd;
}
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