From 4467453502f1a2b177c43867119e54671d78b6de Mon Sep 17 00:00:00 2001 From: =?utf8?q?Andr=C3=A9=20Almeida?= Date: Mon, 16 Sep 2019 11:07:57 -0300 Subject: [PATCH] null_blk: do not fail the module load with zero devices MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The module load should fail only if there is something wrong with the configuration or if an error prevents it to work properly. The module should be able to be loaded with (nr_device == 0), since it will not trigger errors or be in malfunction state. Preventing loading with zero devices also breaks applications that configures this module using configfs API. Remove the nr_device check to fix this. Fixes: f7c4ce890dd2 ("null_blk: validate the number of devices") Reviewed-by: Chaitanya Kulkarni Signed-off-by: André Almeida Signed-off-by: Jens Axboe --- drivers/block/null_blk_main.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 53d4c1529984..909154b73b8a 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -1767,10 +1767,6 @@ static int __init null_init(void) pr_err("null_blk: legacy IO path no longer available\n"); return -EINVAL; } - if (!nr_devices) { - pr_err("null_blk: invalid number of devices\n"); - return -EINVAL; - } if (g_queue_mode == NULL_Q_MQ && g_use_per_node_hctx) { if (g_submit_queues != nr_online_nodes) { pr_warn("null_blk: submit_queues param is set to %u.\n", -- 2.30.2