Commit 1c6286f2 authored by Dan Carpenter's avatar Dan Carpenter Committed by Jens Axboe
Browse files

lightnvm: fix some error code in pblk-init.c 



There were a bunch of places in pblk_lines_init() where we didn't set an
error code.  And in pblk_writer_init() we accidentally return 1 instead
of a correct error code, which would result in a Oops later.

Fixes: 11a5d6fdf919 ("lightnvm: physical block device (pblk) target")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarMatias Bjørling <matias@cnexlabs.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 2a79efd8

drivers/lightnvm/pblk-init.c

+14 −6
Original line number Diff line number Diff line
@@ -543,7 +543,7 @@ static int pblk_lines_init(struct pblk *pblk) 
	long nr_bad_blks, nr_meta_blks, nr_free_blks;

	int bb_distance;

	int i;

	int ret = 0;

	int ret;



	lm->sec_per_line = geo->sec_per_blk * geo->nr_luns;

	lm->blk_per_line = geo->nr_luns;
@@ -638,12 +638,16 @@ add_emeta_page: 
	}



	l_mg->bb_template = kzalloc(lm->sec_bitmap_len, GFP_KERNEL);

	if (!l_mg->bb_template)

	if (!l_mg->bb_template) {

		ret = -ENOMEM;

		goto fail_free_meta;

	}



	l_mg->bb_aux = kzalloc(lm->sec_bitmap_len, GFP_KERNEL);

	if (!l_mg->bb_aux)

	if (!l_mg->bb_aux) {

		ret = -ENOMEM;

		goto fail_free_bb_template;

	}



	bb_distance = (geo->nr_luns) * geo->sec_per_pl;

	for (i = 0; i < lm->sec_per_line; i += bb_distance)
@@ -667,8 +671,10 @@ add_emeta_page: 


	pblk->lines = kcalloc(l_mg->nr_lines, sizeof(struct pblk_line),

								GFP_KERNEL);

	if (!pblk->lines)

	if (!pblk->lines) {

		ret = -ENOMEM;

		goto fail_free_bb_aux;

	}



	nr_free_blks = 0;

	for (i = 0; i < l_mg->nr_lines; i++) {
@@ -682,8 +688,10 @@ add_emeta_page: 
		spin_lock_init(&line->lock);



		nr_bad_blks = pblk_bb_line(pblk, line);

		if (nr_bad_blks < 0 || nr_bad_blks > lm->blk_per_line)

		if (nr_bad_blks < 0 || nr_bad_blks > lm->blk_per_line) {

			ret = -EINVAL;

			goto fail_free_lines;

		}



		line->blk_in_line = lm->blk_per_line - nr_bad_blks;

		if (line->blk_in_line < lm->min_blk_line) {
@@ -733,7 +741,7 @@ static int pblk_writer_init(struct pblk *pblk) 
	pblk->writer_ts = kthread_create(pblk_write_ts, pblk, "pblk-writer-t");

	if (IS_ERR(pblk->writer_ts)) {

		pr_err("pblk: could not allocate writer kthread\n");

		return 1;

		return PTR_ERR(pblk->writer_ts);

	}



	return 0;

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