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net: phy: micrel: Fix warn: passing zero to PTR_ERR 

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>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Divya Koppera <Divya.Koppera@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Divya Koppera 2023-01-06 13:59:05 +05:30 committed by David S. Miller
parent d50ede4f53
commit 3f88d7d1be
1 changed files with 5 additions and 5 deletions
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10
drivers/net/phy/micrel.c
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@ -3008,10 +3008,6 @@ static int lan8814_ptp_probe_once(struct phy_device *phydev)
{
struct lan8814_shared_priv *shared = phydev->shared->priv;
if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK) ||
!IS_ENABLED(CONFIG_NETWORK_PHY_TIMESTAMPING))
return 0;
/* Initialise shared lock for clock*/
mutex_init(&shared->shared_lock);
@ -3031,12 +3027,16 @@ 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;