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-rw-r--r--drivers/usb/class/cdc-acm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index bc03b0a690b4..1833912f7f5f 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1642,6 +1642,7 @@ static int acm_pre_reset(struct usb_interface *intf)
struct acm *acm = usb_get_intfdata(intf);
clear_bit(EVENT_RX_STALL, &acm->flags);
+ acm->nb_index = 0; /* pending control transfers are lost */
return 0;
}