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path: root/drivers/isdn/gigaset/asyncdata.c
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Diffstat (limited to 'drivers/isdn/gigaset/asyncdata.c')
-rw-r--r--drivers/isdn/gigaset/asyncdata.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c
index 234cc5d5331..44a58e6f8f6 100644
--- a/drivers/isdn/gigaset/asyncdata.c
+++ b/drivers/isdn/gigaset/asyncdata.c
@@ -334,7 +334,14 @@ static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes,
return startbytes - numbytes;
}
-/* process a block of data received from the device
+/**
+ * gigaset_m10x_input() - process a block of data received from the device
+ * @inbuf: received data and device descriptor structure.
+ *
+ * Called by hardware module {ser,usb}_gigaset with a block of received
+ * bytes. Separates the bytes received over the serial data channel into
+ * user data and command replies (locked/unlocked) according to the
+ * current state of the interface.
*/
void gigaset_m10x_input(struct inbuf_t *inbuf)
{
@@ -543,16 +550,17 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
return iraw_skb;
}
-/* gigaset_send_skb
- * called by common.c to queue an skb for sending
- * and start transmission if necessary
- * parameters:
- * B Channel control structure
- * skb
+/**
+ * gigaset_m10x_send_skb() - queue an skb for sending
+ * @bcs: B channel descriptor structure.
+ * @skb: data to send.
+ *
+ * Called by i4l.c to encode and queue an skb for sending, and start
+ * transmission if necessary.
+ *
* Return value:
- * number of bytes accepted for sending
- * (skb->len if ok, 0 if out of buffer space)
- * or error code (< 0, eg. -EINVAL)
+ * number of bytes accepted for sending (skb->len) if ok,
+ * error code < 0 (eg. -ENOMEM) on error
*/
int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb)
{