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usb: gadget: u_serial: eliminate abuse of ep->driver data 

Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.

In case of u_serial ep->driver_data stores pointer to struct gs_port,
which is referenced in many places in code. Code using ep->driver_data
to mark endpoint as enabled/disabled has been removed.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Robert Baldyga 2015-09-16 12:11:02 +02:00 committed by Felipe Balbi
parent 6e4bfc5408
commit 18411c0f94
1 changed files with 0 additions and 5 deletions
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5
drivers/usb/gadget/function/u_serial.c
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@ -876,7 +876,6 @@ 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;
@ -1224,7 +1223,6 @@ 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);
@ -1264,10 +1262,7 @@ 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);