1:48 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head: f5120f5998803a973b1d432ed2aa7e592527aa46
commit: 48e8c6f1612b3d2dccaea2285231def830cc5b8e [89/100] net: phy: add driver for
Motorcomm yt8511 phy
config: arm-randconfig-r033-20210522 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
e84a9b9bb3051c35dea993cdad7b3d2575638f85)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
#
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit...
git remote add net-next
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
git fetch --no-tags net-next master
git checkout 48e8c6f1612b3d2dccaea2285231def830cc5b8e
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> drivers/net/phy/motorcomm.c:58:6: warning: variable 'ret'
is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (oldpage < 0)
^~~~~~~~~~~
drivers/net/phy/motorcomm.c:110:43: note: uninitialized use occurs here
return phy_restore_page(phydev, oldpage, ret);
^~~
drivers/net/phy/motorcomm.c:58:2: note: remove the 'if' if its condition is
always false
if (oldpage < 0)
^~~~~~~~~~~~~~~~
drivers/net/phy/motorcomm.c:54:9: note: initialize the variable 'ret' to
silence this warning
int ret, oldpage;
^
= 0
> drivers/net/phy/motorcomm.c:83:2: warning: variable 'ge'
is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
default: /* leave everything alone in other modes */
^~~~~~~
drivers/net/phy/motorcomm.c:87:85: note: uninitialized use occurs here
ret = __phy_modify(phydev, YT8511_PAGE, (YT8511_DELAY_RX |
YT8511_DELAY_GE_TX_EN), ge);
^~
drivers/net/phy/motorcomm.c:53:17: note: initialize the variable 'ge' to
silence this warning
unsigned int ge, fe;
^
= 0
2 warnings generated.
vim +58 drivers/net/phy/motorcomm.c
50
51 static int yt8511_config_init(struct phy_device *phydev)
52 {
53 unsigned int ge, fe;
54 int ret, oldpage;
55
56 /* set clock mode to 125mhz */
57 oldpage = phy_select_page(phydev, YT8511_EXT_CLK_GATE);
58 if (oldpage < 0)
59 goto err_restore_page;
60
61 ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_CLK_125M);
62 if (ret < 0)
63 goto err_restore_page;
64
65 /* set rgmii delay mode */
66 switch (phydev->interface) {
67 case PHY_INTERFACE_MODE_RGMII:
68 ge = YT8511_DELAY_GE_TX_DIS;
69 fe = YT8511_DELAY_FE_TX_DIS;
70 break;
71 case PHY_INTERFACE_MODE_RGMII_RXID:
72 ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_DIS;
73 fe = YT8511_DELAY_FE_TX_DIS;
74 break;
75 case PHY_INTERFACE_MODE_RGMII_TXID:
76 ge = YT8511_DELAY_GE_TX_EN;
77 fe = YT8511_DELAY_FE_TX_EN;
78 break;
79 case PHY_INTERFACE_MODE_RGMII_ID:
80 ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN;
81 fe = YT8511_DELAY_FE_TX_EN;
82 break;
83 default: /* leave everything alone in other modes */
84 break;
85 }
86
87 ret = __phy_modify(phydev, YT8511_PAGE, (YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN),
ge);
88 if (ret < 0)
89 goto err_restore_page;
90
91 /* fast ethernet delay is in a separate page */
92 ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_DELAY_DRIVE);
93 if (ret < 0)
94 goto err_restore_page;
95
96 ret = __phy_modify(phydev, YT8511_PAGE, YT8511_DELAY_FE_TX_EN, fe);
97 if (ret < 0)
98 goto err_restore_page;
99
100 /* leave pll enabled in sleep */
101 ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_SLEEP_CTRL);
102 if (ret < 0)
103 goto err_restore_page;
104
105 ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_PLLON_SLP);
106 if (ret < 0)
107 goto err_restore_page;
108
109 err_restore_page:
110 return phy_restore_page(phydev, oldpage, ret);
111 }
112
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org