The controller is required to have a non-zero MNAN value if it supports
ANA:
If the controller supports Asymmetric Namespace Access Reporting, then
this field shall be set to a non-zero value that is less than or equal
to the NN value.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
!(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA))
return 0;
!(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA))
return 0;
+ if (!ctrl->max_namespaces ||
+ ctrl->max_namespaces > le32_to_cpu(id->nn)) {
+ dev_err(ctrl->device,
+ "Invalid MNAN value %u\n", ctrl->max_namespaces);
+ return -EINVAL;
+ }
+
ctrl->anacap = id->anacap;
ctrl->anatt = id->anatt;
ctrl->nanagrpid = le32_to_cpu(id->nanagrpid);
ctrl->anacap = id->anacap;
ctrl->anatt = id->anatt;
ctrl->nanagrpid = le32_to_cpu(id->nanagrpid);