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net: prestera: replace zero-length array with flexible-array member

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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: José Expósito <jose.exposito89@gmail.com>
Reviewed-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Tested-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20211204171349.22776-1-jose.exposito89@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
José Expósito 2021-12-04 18:13:49 +01:00 committed by Jakub Kicinski
parent 5382911f5d
commit 01081be1ea
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/marvell/prestera/prestera_hw.c
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@ -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);