nbft: do not issue an error if ACPI tables are missing

Not all architectures have ACPI tables, e.g. riscv64. Thus the nbft code
should fail gracefully if it's not present.

Signed-off-by: Daniel Wagner <dwagner@suse.de>

diff --git a/nbft.c b/nbft.c
index f2201d8ab3d0f7efa17d6498af793a925f9a6bfe..ff36119d2217498017caf5af0e2e890df30588bf 100644 (file)
--- a/nbft.c
+++ b/nbft.c
@@ -10,6 +10,7 @@
 #include "nvme.h"
 #include "nbft.h"
 #include "fabrics.h"
+#include "nvme-print.h"
 
 #include "util/types.h"
 
@@ -48,10 +49,8 @@ int read_nbft_files(struct list_head *nbft_list, char *path)
        struct nbft_info *nbft;
 
        count = scandir(path, &dent, nbft_filter, NULL);
-       if (count < 0) {
-               fprintf(stderr, "Failed to open %s.\n", path);
-               return -1;
-       }
+       if (count < 0)
+               return -errno;
 
        for (i = 0; i < count; i++) {
                snprintf(filename, sizeof(filename), "%s/%s", path, dent[i]->d_name);
@@ -98,8 +97,11 @@ int discover_from_nbft(nvme_root_t r, char *hostnqn_arg, char *hostid_arg,
 
        list_head_init(&nbft_list);
        ret = read_nbft_files(&nbft_list, nbft_path);
-       if (ret)
+       if (ret) {
+               if (ret != ENOENT)
+                       nvme_show_perror("Failed to access ACPI tables directory");
                goto out_free_2;
+       }
 
        list_for_each(&nbft_list, entry, node)
                for (ss = entry->nbft->subsystem_ns_list; ss && *ss; ss++)