w1: Replace zero-length array with flexible-array
authorGustavo A. R. Silva <gustavoars@kernel.org>
Thu, 28 May 2020 14:35:11 +0000 (09:35 -0500)
committerGustavo A. R. Silva <gustavoars@kernel.org>
Tue, 16 Jun 2020 04:08:32 +0000 (23:08 -0500)
There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://github.com/KSPP/linux/issues/21

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
drivers/w1/w1_netlink.h

index 3041092..449680a 100644 (file)
@@ -73,7 +73,7 @@ struct w1_netlink_msg
                        __u32           res;
                } mst;
        } id;
-       __u8                            data[0];
+       __u8                            data[];
 };
 
 /**
@@ -122,7 +122,7 @@ struct w1_netlink_cmd
        __u8                            cmd;
        __u8                            res;
        __u16                           len;
-       __u8                            data[0];
+       __u8                            data[];
 };
 
 #ifdef __KERNEL__