linux-kernel - [PATCH 5.16 0535/1039] mailbox: pcc: Avoid using the uninitialized variable dev

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Date:   Mon, 24 Jan 2022 19:38:44 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jassi Brar <jassisinghbrar@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0535/1039] mailbox: pcc: Avoid using the uninitialized variable dev

From: Sudeep Holla <sudeep.holla@....com>

[ Upstream commit 960c4056aadcf61983f8eaac159927a052f8cf01 ]

Smatch static checker warns:

  |  drivers/mailbox/pcc.c:292 pcc_mbox_request_channel()
  |  error: uninitialized symbol 'dev'.

Fix the same by using pr_err instead of dev_err as the variable 'dev'
is uninitialized at that stage.

Fixes: ce028702ddbc ("mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe")
Cc: Jassi Brar <jassisinghbrar@...il.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Jassi Brar <jaswinder.singh@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mailbox/pcc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 887a3704c12ec..e0a1ab3861f0d 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -289,7 +289,7 @@ pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id)
 	pchan = chan_info + subspace_id;
 	chan = pchan->chan.mchan;
 	if (IS_ERR(chan) || chan->cl) {
-		dev_err(dev, "Channel not found for idx: %d\n", subspace_id);
+		pr_err("Channel not found for idx: %d\n", subspace_id);
 		return ERR_PTR(-EBUSY);
 	}
 	dev = chan->mbox->dev;
-- 
2.34.1