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authorJohan Hovold <jhovold@gmail.com>2012-10-25 18:56:33 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-25 11:11:19 -0700
commite681b66f2e19fadbe8a7e2a17900978cb6bc921f (patch)
tree8b751828c1853ee35f3067d9ede2a0baf3f68502 /drivers
parent28c3ae9a8cf45f439c9a0779ebd0256e2ae72813 (diff)
USB: mos7840: remove invalid disconnect handling
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> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/serial/mos7840.c13
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index f2c4bb709747..84f8c106e5e9 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -222,7 +222,6 @@ struct moschip_port {
__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;
@@ -674,14 +673,7 @@ static void mos7840_interrupt_callback(struct urb *urb)
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);
}
}
}
@@ -2598,9 +2590,6 @@ static void mos7840_disconnect(struct usb_serial *serial)
for (i = 0; i < serial->num_ports; ++i) {
mos7840_port = mos7840_get_port_private(serial->port[i]);
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);
}
}