USB: mos7840: remove invalid disconnect handling
commit e681b66f2e19fadbe8a7e2a17900978cb6bc921f upstream.
Remove private zombie flag used to signal disconnect and to prevent
control urb from being submitted from interrupt urb completion handler.
The control urb will not be re-submitted as both the control urb and the
interrupt urb is killed on disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 6f07880..0179d34 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -239,7 +239,6 @@
__u8 shadowMCR; /* last MCR value received */
char open;
char open_ports;
- char zombie;
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
int delta_msr_cond;
@@ -642,14 +641,7 @@
wreg = MODEM_STATUS_REGISTER;
break;
}
- spin_lock(&mos7840_port->pool_lock);
- if (!mos7840_port->zombie) {
- rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data);
- } else {
- spin_unlock(&mos7840_port->pool_lock);
- return;
- }
- spin_unlock(&mos7840_port->pool_lock);
+ rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data);
}
}
}
@@ -2607,9 +2599,6 @@
mos7840_port = mos7840_get_port_private(serial->port[i]);
dbg ("mos7840_port %d = %p", i, mos7840_port);
if (mos7840_port) {
- spin_lock_irqsave(&mos7840_port->pool_lock, flags);
- mos7840_port->zombie = 1;
- spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
usb_kill_urb(mos7840_port->control_urb);
}
}