Re: [PATCH] net: prestera: replace zero-length array with flexible-array member

Subject: [PATCH] net: prestera: replace zero-length array with flexible-array member 
 
One-element and zero-length arrays are deprecated and should be
replaced with flexible-array members:
https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays

Replace zero-length array with flexible-array member and make use
of the struct_size() helper.

Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Jose Exposito <redacted>
---
 drivers/net/ethernet/marvell/prestera/prestera_hw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 92cb5e9099c6..6282c9822e2b 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c

@@ -443,7 +443,7 @@ struct prestera_msg_counter_resp {
         __le32 offset;
         __le32 num_counters;
         __le32 done;
-       struct prestera_msg_counter_stats stats[0];
+       struct prestera_msg_counter_stats stats[];
 };
 
 struct prestera_msg_span_req {

@@ -1900,7 +1900,7 @@ int prestera_hw_counters_get(struct prestera_switch *sw, u32 idx,
                 .block_id = __cpu_to_le32(idx),
                 .num_counters = __cpu_to_le32(*len),
         };
-       size_t size = sizeof(*resp) + sizeof(*resp->stats) * (*len);
+       size_t size = struct_size(resp, stats, *len);
         int err, i;
 
         resp = kmalloc(size, GFP_KERNEL);

-- 
2.25.1