4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Hannes Reinecke <h...@suse.de> commit 221255aee67ec1c752001080aafec0c4e9390d95 upstream. device handler initialisation might fail due to a number of reasons. But as device_handlers are optional this shouldn't cause us to disable the device entirely. So just ignore errors from scsi_dh_add_device(). Reviewed-by: Johannes Thumshirn <jthumsh...@suse.com> Reviewed-by: Christoph Hellwig <h...@lst.de> Signed-off-by: Hannes Reinecke <h...@suse.de> Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com> Cc: Laura Abbott <labb...@redhat.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/scsi/scsi_sysfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -1058,11 +1058,12 @@ int scsi_sysfs_add_sdev(struct scsi_devi } error = scsi_dh_add_device(sdev); - if (error) { + if (error) + /* + * device_handler is optional, so any error can be ignored + */ sdev_printk(KERN_INFO, sdev, "failed to add device handler: %d\n", error); - return error; - } device_enable_async_suspend(&sdev->sdev_dev); error = device_add(&sdev->sdev_dev);