From: Savin Zlobec <[EMAIL PROTECTED]>
On USB cable disconnect g_serial doesn't hangup the port tty,
which results in an endless read on the tty device. With the
following patch the read and select behave correctly when
the cable is unplugged.
Signed-off-by: Savin Zlobec <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
---
drivers/usb/gadget/serial.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- g26.orig/drivers/usb/gadget/serial.c 2008-02-01 22:24:38.000000000
-0800
+++ g26/drivers/usb/gadget/serial.c 2008-02-16 13:10:35.000000000 -0800
@@ -2162,10 +2162,8 @@ static void gs_free_ports(struct gs_dev
if (port->port_open_count > 0 || port->port_in_use) {
port->port_dev = NULL;
wake_up_interruptible(&port->port_write_wait);
- if (port->port_tty) {
-
wake_up_interruptible(&port->port_tty->read_wait);
-
wake_up_interruptible(&port->port_tty->write_wait);
- }
+ if (port->port_tty)
+ tty_hangup(port->port_tty);
spin_unlock_irqrestore(&port->port_lock, flags);
} else {
spin_unlock_irqrestore(&port->port_lock, flags);
-
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