scsi: lpfc: Replace strlcat() with sysfs_emit_at() in the sysfs show functions

In preparation for removing the strlcat() API[1], replace its uses in
lpfc_cmf_info_show(), lpfc_nvme_info_show() and lpfc_scsi_stat_show().

The three functions build sysfs attribute output, and sysfs_emit_at() is
the designated helper for that. The single write paths become
sysfs_emit(), the offset zero form of the same helper. Each intermediate
tmp buffer and its per fragment overflow check become unnecessary. Once
the page is full, sysfs_emit_at() writes nothing more, so dropping the
early exits does not change the produced bytes. Each loop that appends
keeps one exit, so a full page stops the iteration. In
lpfc_nvme_info_show() the exit also releases the fc_nodes_list_lock as
it did before. The unlock_buf_done label loses its last user and is
removed.

The old code capped every fragment at LPFC_MAX_INFO_TMP_LEN or
LPFC_MAX_SCSI_INFO_TMP_LEN bytes before appending it. The replacement
formats each fragment directly into the page, so a fragment longer than
its old tmp buffer is no longer truncated when the page has room for
it. Both macros lose their last user and are removed.

The running length that sysfs_emit_at() maintains equals the length that
the removed strnlen() calls computed, so the "Could be more info"
overflow markers keep their trigger condition.

Link: https://github.com/KSPP/linux/issues/370 [1]
Signed-off-by: Ian Bridges <icb@fastmail.org>
Link: https://patch.msgid.link/20260729144617.1388646-6-icb@fastmail.org
Reviewed-by: Nigel Kirkland <nigel.kirkland@broadcom.com>
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions