linux-kernel - [PATCH v2 02/15] aoe: add error handling support for add

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Date:   Mon, 27 Sep 2021 15:00:57 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     axboe@...nel.dk, justin@...aid.com, geert@...ux-m68k.org,
        ulf.hansson@...aro.org, hare@...e.de, tj@...nel.org,
        philipp.reisner@...bit.com, lars.ellenberg@...bit.com,
        jdike@...toit.com, richard@....at, anton.ivanov@...bridgegreys.com,
        johannes.berg@...el.com, chris.obbard@...labora.com,
        krisman@...labora.com, zhuyifei1999@...il.com, thehajime@...il.com,
        chris@...kel.net, jcmvbkbc@...il.com, tim@...erelk.net
Cc:     linux-xtensa@...ux-xtensa.org, linux-um@...ts.infradead.org,
        linux-m68k@...ts.linux-m68k.org, drbd-dev@...ts.linbit.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: [PATCH v2 02/15] aoe: add error handling support for add_disk()

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/block/aoe/aoeblk.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 06b360f7123a..e436b0e8eff5 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -417,7 +417,9 @@ aoeblk_gdalloc(void *vp)
 
 	spin_unlock_irqrestore(&d->lock, flags);
 
-	device_add_disk(NULL, gd, aoe_attr_groups);
+	err = device_add_disk(NULL, gd, aoe_attr_groups);
+	if (err)
+		goto out_disk_cleanup;
 	aoedisk_add_debugfs(d);
 
 	spin_lock_irqsave(&d->lock, flags);
@@ -426,6 +428,8 @@ aoeblk_gdalloc(void *vp)
 	spin_unlock_irqrestore(&d->lock, flags);
 	return;
 
+out_disk_cleanup:
+	blk_cleanup_disk(gd);
 err_tagset:
 	blk_mq_free_tag_set(set);
 err_mempool:
-- 
2.30.2