cdc-acm: log message for serial state notification

Adds a similar log message to USB_CDC_NOTIFY_SERIAL_STATE as it is
already done with USB_CDC_NOTIFY_NETWORK_CONNECTION.

Signed-off-by: Tobias Herzog <t-herzog@gmx.de>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index eb854dd4ed5b..5357d83bbda2 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -305,6 +305,8 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf)
                 }
 
                 newctrl = get_unaligned_le16(data);
+                dev_dbg(&acm->control->dev,
+                        "%s - serial state: 0x%x\n", __func__, newctrl);
 
                 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
                         dev_dbg(&acm->control->dev,