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

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@suse.de Reviewed-by: Johannes Thumshirn jthumshirn@suse.de