xen: fix build

There were 2 errors:

lib/librte_pmd_xenvirt/rte_xen_lib.c:409:2:
error: zero-length gnu_printf format string [-Werror=format-zero-length]

lib/librte_pmd_xenvirt/rte_xen_lib.c:424:2:
error: format '%p' expects argument of type 'void *', but argument 4 has
type 'uintptr_t' [-Werror=format=]

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/lib/librte_pmd_xenvirt/rte_xen_lib.c b/lib/librte_pmd_xenvirt/rte_xen_lib.c
index 85a1ed9..b3932f0 100644 (file)
--- a/lib/librte_pmd_xenvirt/rte_xen_lib.c
+++ b/lib/librte_pmd_xenvirt/rte_xen_lib.c
@@ -406,8 +406,6 @@ grant_gntalloc_mbuf_pool(struct rte_mempool *mpool, uint32_t pg_num, uint32_t *g
        char key_str[PATH_MAX] = {0};
        char val_str[PATH_MAX] = {0};
 
-       snprintf(val_str, sizeof(val_str), "");
-
        if (grant_node_create(pg_num, gref_arr, pa_arr, val_str, sizeof(val_str))) {
                return -1;
        }
@@ -421,7 +419,7 @@ grant_gntalloc_mbuf_pool(struct rte_mempool *mpool, uint32_t pg_num, uint32_t *g
        if (snprintf(key_str, sizeof(key_str),
                DPDK_XENSTORE_PATH"%d"MEMPOOL_VA_XENSTORE_STR, mempool_idx) == -1)
                return -1;
-       if (snprintf(val_str, sizeof(val_str), "%p", (uintptr_t)mpool->elt_va_start) == -1)
+       if (snprintf(val_str, sizeof(val_str), "%"PRIxPTR, (uintptr_t)mpool->elt_va_start) == -1)
                return -1;
        if (xenstore_write(key_str, val_str) == -1)
                return -1;