On Fri, Jan 18, 2019 at 10:48:15AM -0700, Jens Axboe wrote: > It's UFS that totally buggy, if you look at its queuecommand, it does: > > if (!down_read_trylock(&hba->clk_scaling_lock)) > return SCSI_MLQUEUE_HOST_BUSY; > > UFS either needs to get fixed up, or we'll want a way to do something like > the below. I think the right answer is to just revert the offending patch instead of papering over it in the SCSI code.