scsi: configure runtime pm before calling device_add in scsi_add_host_with_dma

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Runtime PM should be configured already once we call device_add. See
also the description in this mail thread
https://lists.linuxfoundation.org/pipermail/linux-pm/2009-November/023198.html
or the order of calls e.g. in usb_new_device.

The changed order also helps to avoid scenarios where runtime pm for
&shost->shost_gendev is activated whilst the parent is suspended,
resulting in error message "runtime PM trying to activate child device
hostx but parent yyy is not active".

In addition properly reverse the runtime pm calls in the error path.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

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Heiner Kallweit 2016-08-03 21:49:03 +02:00 • committed by Martin K. Petersen

parent afc3f83cb4

commit 0d5644b7d8

1 changed files with 8 additions and 4 deletions

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drivers/scsi/hosts.c

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