firmware: pcdp: Replace zero-length array with flexible-array

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>

diff --git a/drivers/firmware/pcdp.h b/drivers/firmware/pcdp.h
index ce75d1da9e84bde4f58efb59ca4947f91da78a42..e02540571c524c40c8abbad799a4c8c785468903 100644 (file)
--- a/drivers/firmware/pcdp.h
+++ b/drivers/firmware/pcdp.h
@@ -103,6 +103,6 @@ struct pcdp {
        u8                      creator_id[4];
        u32                     creator_rev;
        u32                     num_uarts;
-       struct pcdp_uart        uart[0];        /* actual size is num_uarts */
+       struct pcdp_uart        uart[]; /* actual size is num_uarts */
        /* remainder of table is pcdp_device structures */
 } __attribute__((packed));