net/thunderx: fix build with clang

Fix the following error with clang
	error: unused function 'nicvf_mbox_msg_str'

The function nicvf_mbox_msg_str() may be unused, based on DEBUG
compilation option selected. Mark __attribute__((unused)) on
this function, to inform compiler that this function may be unused

Fixes: 966e225c2396 ("net/thunderx/base: add mailbox for PF/VF communication")
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Reported-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/drivers/net/thunderx/base/nicvf_mbox.c b/drivers/net/thunderx/base/nicvf_mbox.c
index 306733112c310aad72109622305160afbfc62f57..9c5cd834e9c7d7744f988f2433628fa516b621ff 100644 (file)
--- a/drivers/net/thunderx/base/nicvf_mbox.c
+++ b/drivers/net/thunderx/base/nicvf_mbox.c
@@ -64,7 +64,7 @@ static const char *mbox_message[NIC_MBOX_MSG_MAX] =  {
        [NIC_MBOX_MSG_SHUTDOWN]           = "NIC_MBOX_MSG_SHUTDOWN",
 };
 
-static inline const char *
+static inline const char * __attribute__((unused))
 nicvf_mbox_msg_str(int msg)
 {
        assert(msg >= 0 && msg < NIC_MBOX_MSG_MAX);