[PATCH 1/2][next] scsi: lpfc: Replace one-element array with flexible-array member

[Gustavo A. R. Silva]

One-element arrays are deprecated, and we are replacing them with flexible
array members instead. So, replace one-element arrays with flexible-array
members in a couple of structures, and refactor the rest of the code,
accordingly.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [1].

This results in no differences in binary output.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/295
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
 drivers/scsi/lpfc/lpfc_ct.c | 6 ++++--
 drivers/scsi/lpfc/lpfc_hw.h | 4 ++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index f3bdcebe67f5..e880d127d7f5 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -3748,7 +3748,8 @@ lpfc_vmid_cmd(struct lpfc_vport *vport,
 		rap->obj[0].entity_id_len = vmid->vmid_len;
 		memcpy(rap->obj[0].entity_id, vmid->host_vmid, vmid->vmid_len);
 		size = RAPP_IDENT_OFFSET +
-			sizeof(struct lpfc_vmid_rapp_ident_list);
+			sizeof(struct lpfc_vmid_rapp_ident_list) +
+			sizeof(struct entity_id_object);
 		retry = 1;
 		break;
 
@@ -3767,7 +3768,8 @@ lpfc_vmid_cmd(struct lpfc_vport *vport,
 		dap->obj[0].entity_id_len = vmid->vmid_len;
 		memcpy(dap->obj[0].entity_id, vmid->host_vmid, vmid->vmid_len);
 		size = DAPP_IDENT_OFFSET +
-			sizeof(struct lpfc_vmid_dapp_ident_list);
+			sizeof(struct lpfc_vmid_dapp_ident_list) +
+			sizeof(struct entity_id_object);
 		write_lock(&vport->vmid_lock);
 		vmid->flag &= ~LPFC_VMID_REGISTERED;
 		write_unlock(&vport->vmid_lock);
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 19b2d2754f32..b2123ec4df88 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -1415,12 +1415,12 @@ struct app_id_object {
 
 struct lpfc_vmid_rapp_ident_list {
 	uint32_t no_of_objects;
-	struct entity_id_object obj[1];
+	struct entity_id_object obj[];
 };
 
 struct lpfc_vmid_dapp_ident_list {
 	uint32_t no_of_objects;
-	struct entity_id_object obj[1];
+	struct entity_id_object obj[];
 };
 
 #define GALLAPPIA_ID_LAST  0x80
-- 
2.34.1