cdc-acm: avoid interface_to_usbdev call

Pointer to usb_device is already stored in acm structure.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 9ae94bc..464ca90 100644 (file)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1076,19 +1076,17 @@ static void acm_write_buffers_free(struct acm *acm)
 {
        int i;
        struct acm_wb *wb;
-       struct usb_device *usb_dev = interface_to_usbdev(acm->control);
 
        for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
-               usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
+               usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah);
 }
 
 static void acm_read_buffers_free(struct acm *acm)
 {
-       struct usb_device *usb_dev = interface_to_usbdev(acm->control);
        int i;
 
        for (i = 0; i < acm->rx_buflimit; i++)
-               usb_free_coherent(usb_dev, acm->readsize,
+               usb_free_coherent(acm->dev, acm->readsize,
                          acm->read_buffers[i].base, acm->read_buffers[i].dma);
 }
 
@@ -1524,7 +1522,6 @@ static void stop_data_traffic(struct acm *acm)
 static void acm_disconnect(struct usb_interface *intf)
 {
        struct acm *acm = usb_get_intfdata(intf);
-       struct usb_device *usb_dev = interface_to_usbdev(intf);
        struct tty_struct *tty;
        int i;
 
@@ -1562,7 +1559,7 @@ static void acm_disconnect(struct usb_interface *intf)
        for (i = 0; i < acm->rx_buflimit; i++)
                usb_free_urb(acm->read_urbs[i]);
        acm_write_buffers_free(acm);
-       usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
+       usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
        acm_read_buffers_free(acm);
 
        if (!acm->combined_interfaces)