linux-kernel - [PATCH 2/2] lightnvm: print error when target is not found

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Message-Id: <20190727182626.27991-3-minwoo.im.dev@gmail.com>
Date:   Sun, 28 Jul 2019 03:26:26 +0900
From:   Minwoo Im <minwoo.im.dev@...il.com>
To:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Klaus Birkelund <klaus@...kelund.eu>,
        Minwoo Im <minwoo.im.dev@...il.com>,
        Matias Bjørling <mb@...htnvm.io>,
        Javier González <javier@...igon.com>
Subject: [PATCH 2/2] lightnvm: print error when target is not found

If userspace requests target to be removed, nvm_remove_tgt() will
iterate the nvm_devices to find out the given target, but if not
found, then it should print out the error.

Cc: Matias Bjørling <mb@...htnvm.io>
Cc: Javier González <javier@...igon.com>
Signed-off-by: Minwoo Im <minwoo.im.dev@...il.com>
---
 drivers/lightnvm/core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 4c7b48f72e80..4c89a2420a51 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -494,8 +494,11 @@ static int nvm_remove_tgt(struct nvm_ioctl_remove *remove)
 	}
 	up_read(&nvm_lock);
 
-	if (!t)
+	if (!t) {
+		pr_err("failed to remove target %s not found\n",
+				remove->tgtname);
 		return 1;
+	}
 
 	__nvm_remove_target(t, true);
 	kref_put(&dev->ref, nvm_free);
-- 
2.17.1