From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 20 Jan 2016 14:01:31 -0300 Subject: Linux-libre 4.4-gnu --- drivers/usb/gadget/function/u_serial.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'drivers/usb/gadget/function/u_serial.c') diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 8d77b2b50..15a4229ec 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -114,6 +114,7 @@ struct gs_port { struct gs_buf port_write_buf; wait_queue_head_t drain_wait; /* wait while writes drain */ bool write_busy; + wait_queue_head_t close_wait; /* REVISIT this state ... */ struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ @@ -876,7 +877,6 @@ static void gs_close(struct tty_struct *tty, struct file *file) else gs_buf_clear(&port->port_write_buf); - tty->driver_data = NULL; port->port.tty = NULL; port->openclose = false; @@ -884,7 +884,7 @@ static void gs_close(struct tty_struct *tty, struct file *file) pr_debug("gs_close: ttyGS%d (%p,%p) done!\n", port->port_num, tty, file); - wake_up(&port->port.close_wait); + wake_up(&port->close_wait); exit: spin_unlock_irq(&port->port_lock); } @@ -1044,6 +1044,7 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) tty_port_init(&port->port); spin_lock_init(&port->port_lock); init_waitqueue_head(&port->drain_wait); + init_waitqueue_head(&port->close_wait); tasklet_init(&port->push, gs_rx_push, (unsigned long) port); @@ -1074,7 +1075,7 @@ static void gserial_free_port(struct gs_port *port) { tasklet_kill(&port->push); /* wait for old opens to finish */ - wait_event(port->port.close_wait, gs_closed(port)); + wait_event(port->close_wait, gs_closed(port)); WARN_ON(port->port_usb != NULL); tty_port_destroy(&port->port); kfree(port); @@ -1224,7 +1225,6 @@ int gserial_connect(struct gserial *gser, u8 port_num) fail_out: usb_ep_disable(gser->in); - gser->in->driver_data = NULL; return status; } EXPORT_SYMBOL_GPL(gserial_connect); @@ -1269,10 +1269,7 @@ void gserial_disconnect(struct gserial *gser) /* disable endpoints, aborting down any active I/O */ usb_ep_disable(gser->out); - gser->out->driver_data = NULL; - usb_ep_disable(gser->in); - gser->in->driver_data = NULL; /* finally, free any unused/unusable I/O buffers */ spin_lock_irqsave(&port->port_lock, flags); -- cgit v1.2.3-54-g00ecf