net: qed: sanitize BE/LE data processing

Current code assumes that both host and device operates in Little Endian
in lots of places. While this is true for x86 platform, this doesn't mean
we should not care about this.

This commit addresses all parts of the code that were pointed out by sparse
checker. All operations with restricted (__be*/__le*) types are now
protected with explicit from/to CPU conversions, even if they're noops on
common setups.

I'm sure there are more such places, but this implies a deeper code
investigation, and is a subject for future works.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_mng_tlv.c b/drivers/net/ethernet/qlogic/qed/qed_mng_tlv.c
index 1dd01e0373ab..3e3192a3ad9b 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_mng_tlv.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mng_tlv.c
@@ -1276,7 +1276,7 @@ int qed_mfw_process_tlv_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 	 */
 	for (offset = 0; offset < size; offset += sizeof(u32)) {
 		val = qed_rd(p_hwfn, p_ptt, addr + offset);
-		val = be32_to_cpu(val);
+		val = be32_to_cpu((__force __be32)val);
 		memcpy(&p_mfw_buf[offset], &val, sizeof(u32));
 	}
 
@@ -1325,7 +1325,7 @@ int qed_mfw_process_tlv_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 	 */
 	for (offset = 0; offset < size; offset += sizeof(u32)) {
 		memcpy(&val, &p_mfw_buf[offset], sizeof(u32));
-		val = cpu_to_be32(val);
+		val = (__force u32)cpu_to_be32(val);
 		qed_wr(p_hwfn, p_ptt, addr + offset, val);
 	}