scsi: scsi-sysfs: Adjust error returned for adapter reset request
If scsi_host_template->host_reset is NULL and the user requests an adapter reset through echo adapter > /sys/class/scsi_host/hostx/host_reset -EINVAL will be returned even though the "adapter" argument is perfectly valid. Change this so that we only return -EINVAL if the provided string is invalid. If the host does not implement a ->host_reset function we'll return -EOPNOTSUPP. [mkp: tweaked patch description] Signed-off-by: weiping zhang <zhangweiping@didichuxing.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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