Based on the following documentation usb_get_inf(), use usb_get_intf() and usb_put_intf() in order to update the reference count of the usb interface structure. Documentation of usb_get_inf(): [quote] Each live reference to a interface must be refcounted. Drivers for USB interfaces should normally record such references in their probe methods, when they bind to an interface, and release them by calling usb_put_intf, in their disconnect methods. [/quote] Signed-off-by: Salah Triki <salah.triki@xxxxxxxxx> --- Change since v1: Modification of the description drivers/input/tablet/acecad.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c index a38d1fe97334..85fe134a30ee 100644 --- a/drivers/input/tablet/acecad.c +++ b/drivers/input/tablet/acecad.c @@ -151,7 +151,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_ goto fail2; } - acecad->intf = intf; + acecad->intf = usb_get_intf(intf); acecad->input = input_dev; if (dev->manufacturer) @@ -236,6 +236,9 @@ static void usb_acecad_disconnect(struct usb_interface *intf) input_unregister_device(acecad->input); usb_free_urb(acecad->irq); usb_free_coherent(udev, 8, acecad->data, acecad->data_dma); + + usb_put_intf(acecad->intf); + kfree(acecad); } -- 2.25.1
