From: Divya Koppera <Divya.Koppera@microchip.com>
To: <andrew@lunn.ch>, <hkallweit1@gmail.com>, <linux@armlinux.org.uk>,
<davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
<pabeni@redhat.com>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <richardcochran@gmail.com>
Cc: <UNGLinuxDriver@microchip.com>, <Madhuri.Sripada@microchip.com>
Subject: [PATCH v2 net] net: phy: micrel: Fix warn: passing zero to PTR_ERR
Date: Tue, 19 Jul 2022 17:30:52 +0530 [thread overview]
Message-ID: <20220719120052.26681-1-Divya.Koppera@microchip.com> (raw)
Handle the NULL pointer case
Fixes New smatch warnings:
drivers/net/phy/micrel.c:2613 lan8814_ptp_probe_once() warn: passing zero to 'PTR_ERR'
vim +/PTR_ERR +2613 drivers/net/phy/micrel.c
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: ece19502834d ("net: phy: micrel: 1588 support for LAN8814 phy")
Signed-off-by: Divya Koppera <Divya.Koppera@microchip.com>
---
v1 -> v2:
- Handled NULL pointer case
- Changed subject line with net-next to net
---
drivers/net/phy/micrel.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index e78d0bf69bc3..6be6ee156f40 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -2812,12 +2812,16 @@ static int lan8814_ptp_probe_once(struct phy_device *phydev)
shared->ptp_clock = ptp_clock_register(&shared->ptp_clock_info,
&phydev->mdio.dev);
- if (IS_ERR_OR_NULL(shared->ptp_clock)) {
+ if (IS_ERR(shared->ptp_clock)) {
phydev_err(phydev, "ptp_clock_register failed %lu\n",
PTR_ERR(shared->ptp_clock));
return -EINVAL;
}
+ /* Check if PHC support is missing at the configuration level */
+ if (!shared->ptp_clock)
+ return 0;
+
phydev_dbg(phydev, "successfully registered ptp clock\n");
shared->phydev = phydev;
--
2.17.1
next reply other threads:[~2022-07-19 12:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-19 12:00 Divya Koppera [this message]
2022-07-19 13:56 ` [PATCH v2 net] net: phy: micrel: Fix warn: passing zero to PTR_ERR Richard Cochran
2022-07-20 4:32 ` Divya.Koppera
2022-07-21 14:16 ` Richard Cochran
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