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authorAmit Virdi <amit.virdi@st.com>2011-05-12 01:04:40 +0000
committerDavid S. Miller <davem@davemloft.net>2011-05-12 18:02:51 -0400
commitcbfd1526f6076ece92b4e2dcc0a2f1e89041b3bd (patch)
tree7ef52c4cefbc4c47720ba5f0e3ce6cdf900f7e49 /net/irda/ircomm
parent7f267051bd7a280265b1b5ead58e9c6e4e1ac3a4 (diff)
downloadlinux-cbfd1526f6076ece92b4e2dcc0a2f1e89041b3bd.tar.gz
net/irda/ircomm_tty.c: Use flip buffers to deliver data
use tty_insert_flip_string and tty_flip_buffer_push to deliver incoming data packets from the IrDA device instead of delivering the packets directly to the line discipline. Following later approach resulted in warning "Sleeping function called from invalid context". Signed-off-by: Amit Virdi <amit.virdi@st.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/irda/ircomm')
-rw-r--r--net/irda/ircomm/ircomm_tty.c14
1 files changed, 5 insertions, 9 deletions
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index a39cca8331d..b3cc8b3989a 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -38,6 +38,7 @@
#include <linux/seq_file.h>
#include <linux/termios.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <linux/interrupt.h>
#include <linux/device.h> /* for MODULE_ALIAS_CHARDEV_MAJOR */
@@ -1132,7 +1133,6 @@ static int ircomm_tty_data_indication(void *instance, void *sap,
struct sk_buff *skb)
{
struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance;
- struct tty_ldisc *ld;
IRDA_DEBUG(2, "%s()\n", __func__ );
@@ -1161,15 +1161,11 @@ static int ircomm_tty_data_indication(void *instance, void *sap,
}
/*
- * Just give it over to the line discipline. There is no need to
- * involve the flip buffers, since we are not running in an interrupt
- * handler
+ * Use flip buffer functions since the code may be called from interrupt
+ * context
*/
-
- ld = tty_ldisc_ref(self->tty);
- if (ld)
- ld->ops->receive_buf(self->tty, skb->data, NULL, skb->len);
- tty_ldisc_deref(ld);
+ tty_insert_flip_string(self->tty, skb->data, skb->len);
+ tty_flip_buffer_push(self->tty);
/* No need to kfree_skb - see ircomm_ttp_data_indication() */