From e0bff8480fce6437124558f49f608f214c9092be Mon Sep 17 00:00:00 2001
From: Ankur Dwivedi <adwivedi@marvell.com>
Date: Fri, 17 Jun 2022 19:09:30 +0530
Subject: [PATCH] crypto/cnxk: fix build with GCC 12
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[ upstream commit d82d2db2659411059c047a96e867666625a0f1f2 ]

The following warning is observed with GCC 12 compilation:

In file included from ../drivers/crypto/cnxk/cn10k_cryptodev_ops.c:17:
In function ‘fill_sg_comp_from_iov’,
    inlined from ‘cpt_pdcp_chain_alg_prep’ at
        ../drivers/crypto/cnxk/cnxk_se.h:1194:8,
    inlined from ‘cpt_fc_enc_hmac_prep’ at
        ../drivers/crypto/cnxk/cnxk_se.h:1871:9,
    inlined from ‘fill_digest_params’ at
        ../drivers/crypto/cnxk/cnxk_se.h:2829:8,
    inlined from ‘cpt_sym_inst_fill’ at
        ../drivers/crypto/cnxk/cn10k_cryptodev_ops.c:92:9,
    inlined from ‘cn10k_cpt_fill_inst.constprop’ at
        ../drivers/crypto/cnxk/cn10k_cryptodev_ops.c:146:10:
../drivers/crypto/cnxk/cnxk_se.h:222:52: warning: array subscript 0 is
outside array bounds of ‘struct roc_se_buf_ptr[0]’ [-Warray-bounds]
  222 |           e_vaddr = (uint64_t)bufs[j].vaddr;
      |                               ~~~~~~~^~~~~~
../drivers/crypto/cnxk/cnxk_se.h:223:48: warning: array subscript 0 is
outside array bounds of ‘struct roc_se_buf_ptr[0]’ [-Warray-bounds]
  223 |           e_len = (size > bufs[j].size) ? bufs[j].size : size;
      |                           ~~~~~~~^~~~~

This patch resolves the warning.

Fixes: 3de331795f73 ("crypto/cnxk: add flexi cipher encryption")

Signed-off-by: Ankur Dwivedi <adwivedi@marvell.com>
Reviewed-by: Anoob Joseph <anoobj@marvell.com>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
Tested-by: David Marchand <david.marchand@redhat.com>
---
 drivers/crypto/cnxk/cnxk_se.h | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/crypto/cnxk/cnxk_se.h b/drivers/crypto/cnxk/cnxk_se.h
index 37237de21a..99a2894fa6 100644
--- a/drivers/crypto/cnxk/cnxk_se.h
+++ b/drivers/crypto/cnxk/cnxk_se.h
@@ -179,27 +179,27 @@ fill_sg_comp_from_iov(struct roc_se_sglist_comp *list, uint32_t i,
 	int32_t j;
 	uint32_t extra_len = extra_buf ? extra_buf->size : 0;
 	uint32_t size = *psize;
-	struct roc_se_buf_ptr *bufs;
 
-	bufs = from->bufs;
 	for (j = 0; (j < from->buf_cnt) && size; j++) {
+		struct roc_se_sglist_comp *to = &list[i >> 2];
+		uint32_t buf_sz = from->bufs[j].size;
+		void *vaddr = from->bufs[j].vaddr;
 		uint64_t e_vaddr;
 		uint32_t e_len;
-		struct roc_se_sglist_comp *to = &list[i >> 2];
 
 		if (unlikely(from_offset)) {
-			if (from_offset >= bufs[j].size) {
-				from_offset -= bufs[j].size;
+			if (from_offset >= buf_sz) {
+				from_offset -= buf_sz;
 				continue;
 			}
-			e_vaddr = (uint64_t)bufs[j].vaddr + from_offset;
-			e_len = (size > (bufs[j].size - from_offset)) ?
-					(bufs[j].size - from_offset) :
+			e_vaddr = (uint64_t)vaddr + from_offset;
+			e_len = (size > (buf_sz - from_offset)) ?
+					(buf_sz - from_offset) :
 					size;
 			from_offset = 0;
 		} else {
-			e_vaddr = (uint64_t)bufs[j].vaddr;
-			e_len = (size > bufs[j].size) ? bufs[j].size : size;
+			e_vaddr = (uint64_t)vaddr;
+			e_len = (size > buf_sz) ? buf_sz : size;
 		}
 
 		to->u.s.len[i % 4] = rte_cpu_to_be_16(e_len);
-- 
2.23.0