On Wed, 2019-01-16 at 08:35 +0100, Hannes Reinecke wrote: > If the device is _not_ removable we should not start the event > poller as the media will not go away. Having the event poller running > will block the open() call as it will try to flush outstanding > events, > which it can't if the device is in state 'BLOCKED'. So the open() > call > will be stalled until the device state changed, which might be quite > some time depending on the transport. > > Signed-off-by: Hannes Reinecke <hare@xxxxxxxx> > --- > drivers/scsi/sd.c | 3 +++ > 1 file changed, 3 insertions(+) Thanks - you lost patience with me, did you? :-) I didn't submit this yet because Tejun (adding him to CC) had explicitly removed this check in commit 2bae0093cab4, and I was still trying to understand why. Perhaps a follow-up discussion will clarify that. Martin > > diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c > index a1a44f52e0e8..521f0a384446 100644 > --- a/drivers/scsi/sd.c > +++ b/drivers/scsi/sd.c > @@ -1539,6 +1539,9 @@ static unsigned int sd_check_events(struct > gendisk *disk, unsigned int clearing) > return 0; > > sdp = sdkp->device; > + if (!sdp->removable) > + return 0; > + > SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, > "sd_check_events\n")); > > /*
