From: Oliver Neukum Date: Thu, 10 Feb 2011 14:33:37 +0000 (+0100) Subject: usb_wwan: fix error case in close() X-Git-Tag: v2.6.39-rc1~472^2~133 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=9a91aedca2f4ef24344b7cd8f56570e620fbe4d5;p=~emulex%2Finfiniband.git usb_wwan: fix error case in close() The device never needs to be resumed in close(). But the counters must be balanced. As resumption can fail, but the counters must be balanced, use the _no_resume() version which cannot fail. Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index fe5e48eb969..817e6ff8de8 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -424,6 +424,7 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port) spin_lock_irq(&intfdata->susp_lock); portdata->opened = 1; spin_unlock_irq(&intfdata->susp_lock); + /* this balances a get in the generic USB serial code */ usb_autopm_put_interface(serial->interface); return 0; @@ -450,7 +451,8 @@ void usb_wwan_close(struct usb_serial_port *port) usb_kill_urb(portdata->in_urbs[i]); for (i = 0; i < N_OUT_URB; i++) usb_kill_urb(portdata->out_urbs[i]); - usb_autopm_get_interface(serial->interface); + /* balancing - important as an error cannot be handled*/ + usb_autopm_get_interface_no_resume(serial->interface); serial->interface->needs_remote_wakeup = 0; } }