[PATCH 4.14 71/75] xhci: Dont show incorrect WARN message about events for empty rings

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Mathias Nyman commit e4ec40ec4b260efcca15089de4285a0a3411259b upstream. xHC can generate two events for a short transfer if the short TRB and last TRB in the TD

[PATCH 4.14 71/75] xhci: Dont show incorrect WARN message about events for empty rings

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Mathias Nyman commit e4ec40ec4b260efcca15089de4285a0a3411259b upstream. xHC can generate two events for a short transfer if the short TRB and last TRB in the TD are not the same TRB. The