stm class: 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/hwtracing/stm/policy.c b/drivers/hwtracing/stm/policy.c
index 4f932a4..603b4a9 100644 (file)
--- a/drivers/hwtracing/stm/policy.c
+++ b/drivers/hwtracing/stm/policy.c
@@ -34,7 +34,7 @@ struct stp_policy_node {
        unsigned int            first_channel;
        unsigned int            last_channel;
        /* this is the one that's exposed to the attributes */
-       unsigned char           priv[0];
+       unsigned char           priv[];
 };
 
 void *stp_policy_node_priv(struct stp_policy_node *pn)

diff --git a/drivers/hwtracing/stm/stm.h b/drivers/hwtracing/stm/stm.h
index 3569439..a9be49f 100644 (file)
--- a/drivers/hwtracing/stm/stm.h
+++ b/drivers/hwtracing/stm/stm.h
@@ -23,7 +23,7 @@ void *stp_policy_node_priv(struct stp_policy_node *pn);
 
 struct stp_master {
        unsigned int    nr_free;
-       unsigned long   chan_map[0];
+       unsigned long   chan_map[];
 };
 
 struct stm_device {
@@ -42,7 +42,7 @@ struct stm_device {
        const struct config_item_type           *pdrv_node_type;
        /* master allocation */
        spinlock_t              mc_lock;
-       struct stp_master       *masters[0];
+       struct stp_master       *masters[];
 };
 
 #define to_stm_device(_d)                              \