After a disconnect intf->dev is not a valid pointer any longer. As flush() uses it only for logging purposes logging is not worth it. Remove the dev_err() Reported-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx> --- drivers/usb/class/cdc-wdm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index b3a3f249a915..1ca2c85a977d 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -603,16 +603,17 @@ static int wdm_flush(struct file *file, fl_owner_t id) test_bit(WDM_DISCONNECTING, &desc->flags), WDM_FLUSH_TIMEOUT); - /* cannot dereference desc->intf if WDM_DISCONNECTING */ + /* + * to report the correct error. + * This is best effort + * We are inevitably racing with the hardware. + */ if (test_bit(WDM_DISCONNECTING, &desc->flags)) return -ENODEV; if (!rv) return -EIO; rv = desc->werr; - if (rv < 0) - dev_err(&desc->intf->dev, "Error in flush path: %d\n", - rv); return usb_translate_errors(rv); } -- 2.16.4
