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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Kishon Vijay Abraham I <kishon@ti.com>,
	Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Vinod Koul <vkoul@kernel.org>,
	linux-phy@lists.infradead.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] phy: ti: gmii-sel: check of_get_address() for failure
Date: Tue, 14 Sep 2021 14:00:38 +0300	[thread overview]
Message-ID: <20210914110038.GB11657@kili> (raw)

Smatch complains that if of_get_address() returns NULL, then "size"
isn't initialized.  Also it would lead to an Oops.

Fixes: 7f78322cdd67 ("phy: ti: gmii-sel: retrieve ports number and base offset from dt")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/phy/ti/phy-gmii-sel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index 5fd2e8a08bfc..d0ab69750c6b 100644
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -320,6 +320,8 @@ static int phy_gmii_sel_init_ports(struct phy_gmii_sel_priv *priv)
 		u64 size;
 
 		offset = of_get_address(dev->of_node, 0, &size, NULL);
+		if (!offset)
+			return -EINVAL;
 		priv->num_ports = size / sizeof(u32);
 		if (!priv->num_ports)
 			return -EINVAL;
-- 
2.20.1


             reply	other threads:[~2021-09-14 11:01 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-14 11:00 Dan Carpenter [this message]
2021-09-15  9:27 ` Grygorii Strashko
2021-10-20 17:27 ` Vinod Koul

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