Re: [PATCH] sr: Avoid that opening a CD-ROM hangs with runtime power management enabled

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On Fri, Aug 03, 2018 at 10:28:45AM +0200, Johannes Thumshirn wrote:
> On Thu, Aug 02, 2018 at 10:44:42AM -0700, Bart Van Assche wrote:
> > Surround scsi_execute() calls with scsi_autopm_get_device() and
> > scsi_autopm_put_device(). Note: removing sr_mutex protection from
> > the scsi_cd_get() and scsi_cd_put() calls is safe because the
> > purpose of sr_mutex is to serialize cdrom_*() calls.
> > 
> [...]
> 
> Hi Bart,
> 
> With this patch I still have the hang on next-20180801:

Forget my last email, I didn't have Ming's 'blk-mq: fix
blk_mq_tagset_busy_iter' applied.

Tested-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
-- 
Johannes Thumshirn                                          Storage
jthumshirn@xxxxxxx                                +49 911 74053 689
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