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authorPeter Hurley <peter@hurleysoftware.com>2013-03-05 06:09:07 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-06 02:47:05 -0500
commitf74861ca87264e594e0134e8ac14db06be77fe6f (patch)
tree1892fd9ca51aa7984f5f6146811b22da4b1610ae /net/irda/ircomm
parent0b176ce3a7cbfa92eceddf3896f1a504877d974a (diff)
downloadlinux-f74861ca87264e594e0134e8ac14db06be77fe6f.tar.gz
net/irda: Raise dtr in non-blocking open
DTR/RTS need to be raised, regardless of the open() mode, but not if the port has already shutdown. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/irda/ircomm')
-rw-r--r--net/irda/ircomm/ircomm_tty.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 522543d9264..362ba47968e 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -289,8 +289,15 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
* If non-blocking mode is set, or the port is not enabled,
* then make the check up front and then exit.
*/
- if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
- /* nonblock mode is set or port is not enabled */
+ if (test_bit(TTY_IO_ERROR, &tty->flags)) {
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (filp->f_flags & O_NONBLOCK) {
+ /* nonblock mode is set */
+ if (tty->termios.c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
port->flags |= ASYNC_NORMAL_ACTIVE;
IRDA_DEBUG(1, "%s(), O_NONBLOCK requested!\n", __func__ );
return 0;