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From: Dan Carpenter <dan.carpenter@oracle.com>
To: kbuild@lists.01.org, Heiko Stuebner <heiko@sntech.de>,
	davem@davemloft.net, kuba@kernel.org
Cc: lkp@intel.com, kbuild-all@lists.01.org, robh+dt@kernel.org,
	andrew@lunn.ch, f.fainelli@gmail.com, hkallweit1@gmail.com,
	linux@armlinux.org.uk, netdev@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [kbuild] Re: [PATCH v3 1/3] net: phy: mscc: move shared probe code into a helper
Date: Tue, 16 Jun 2020 15:27:20 +0300	[thread overview]
Message-ID: <20200616122720.GN4282@kadam> (raw)
In-Reply-To: <20200615144501.1140870-1-heiko@sntech.de>

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Hi Heiko,

I love your patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on sparc-next/master net/master linus/master v5.8-rc1 next-20200616]
[cannot apply to robh/for-next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Heiko-Stuebner/net-phy-mscc-move-shared-probe-code-into-a-helper/20200615-224727
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git cb8e59cc87201af93dfbb6c3dccc8fcad72a09c2
config: i386-randconfig-m021-20200616 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/net/phy/mscc/mscc_main.c:2002 vsc8574_probe() error: potentially dereferencing uninitialized 'vsc8531'.

# https://github.com/0day-ci/linux/commit/5be350208c014ad5e0afd06868ccaaefd6216345
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout 5be350208c014ad5e0afd06868ccaaefd6216345
vim +/vsc8531 +2002 drivers/net/phy/mscc/mscc_main.c

5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1984  static int vsc8574_probe(struct phy_device *phydev)
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1985  {
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1986  	struct vsc8531_private *vsc8531;
                                                                                                                ^^^^^^^

5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1987  	int rc;
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1988  	u32 default_mode[4] = {VSC8531_LINK_1000_ACTIVITY,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1989  	   VSC8531_LINK_100_ACTIVITY, VSC8531_LINK_ACTIVITY,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1990  	   VSC8531_DUPLEX_COLLISION};
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1991  
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1992  	rc = vsc85xx_probe_helper(phydev, default_mode,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1993  				  ARRAY_SIZE(default_mode),
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1994  				  VSC8584_SUPP_LED_MODES,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1995  				  vsc8584_hw_stats,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1996  				  ARRAY_SIZE(vsc8584_hw_stats));
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1997  	if (rc < 0)
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  1998  		return rc;
00d70d8e0e7811 drivers/net/phy/mscc.c           Quentin Schulz 2018-10-08  1999  
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  2000  	vsc8584_get_base_addr(phydev);
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15  2001  	return devm_phy_package_join(&phydev->mdio.dev, phydev,
5be350208c014a drivers/net/phy/mscc/mscc_main.c Heiko Stuebner 2020-06-15 @2002  				     vsc8531->base_addr, 0);
                                                                                                                     ^^^^^^^^^^^^^^^^^^
Not initialized.

00d70d8e0e7811 drivers/net/phy/mscc.c           Quentin Schulz 2018-10-08  2003  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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      parent reply	other threads:[~2020-06-16 12:28 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15 14:44 [PATCH v3 1/3] net: phy: mscc: move shared probe code into a helper Heiko Stuebner
2020-06-15 14:45 ` [PATCH v3 2/3] dt-bindings: net: ethernet-phy: add enet-phy-clock-out-frequency Heiko Stuebner
2020-06-15 14:45 ` [PATCH v3 3/3] net: phy: mscc: handle the clkout control on some phy variants Heiko Stuebner
2020-06-15 20:56 ` [PATCH v3 1/3] net: phy: mscc: move shared probe code into a helper kernel test robot
2020-06-16  1:11 ` David Miller
2020-06-16  1:12   ` David Miller
2020-06-16  9:10     ` Heiko Stübner
2020-06-16 10:13       ` Russell King - ARM Linux admin
2020-06-16 12:27 ` Dan Carpenter [this message]

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