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path: root/drivers/nvme/host/fabrics.c
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Diffstat (limited to 'drivers/nvme/host/fabrics.c')
-rw-r--r--drivers/nvme/host/fabrics.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index c5a2b71c5268..7ae041e2b3fb 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -698,6 +698,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
if (token >= 0)
pr_warn("I/O fail on reconnect controller after %d sec\n",
token);
+ else
+ token = -1;
+
opts->fast_io_fail_tmo = token;
break;
case NVMF_OPT_HOSTNQN:
@@ -1066,6 +1069,26 @@ out_unlock:
return ret ? ret : count;
}
+static void __nvmf_concat_opt_tokens(struct seq_file *seq_file)
+{
+ const struct match_token *tok;
+ int idx;
+
+ /*
+ * Add dummy entries for instance and cntlid to
+ * signal an invalid/non-existing controller
+ */
+ seq_puts(seq_file, "instance=-1,cntlid=-1");
+ for (idx = 0; idx < ARRAY_SIZE(opt_tokens); idx++) {
+ tok = &opt_tokens[idx];
+ if (tok->token == NVMF_OPT_ERR)
+ continue;
+ seq_puts(seq_file, ",");
+ seq_puts(seq_file, tok->pattern);
+ }
+ seq_puts(seq_file, "\n");
+}
+
static int nvmf_dev_show(struct seq_file *seq_file, void *private)
{
struct nvme_ctrl *ctrl;
@@ -1074,7 +1097,7 @@ static int nvmf_dev_show(struct seq_file *seq_file, void *private)
mutex_lock(&nvmf_dev_mutex);
ctrl = seq_file->private;
if (!ctrl) {
- ret = -EINVAL;
+ __nvmf_concat_opt_tokens(seq_file);
goto out_unlock;
}