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Message-ID: <202305201608.MBqXmFKF-lkp@intel.com>
Date: Sat, 20 May 2023 17:04:25 +0800
From: kernel test robot <lkp@...el.com>
To: Stanley Chang <stanley_chang@...ltek.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Stanley Chang <stanley_chang@...ltek.com>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Alan Stern <stern@...land.harvard.edu>,
Ray Chi <raychi@...gle.com>,
Bagas Sanjaya <bagasdotme@...il.com>,
Eugeniu Rosca <erosca@...adit-jv.com>,
Michael Grzeschik <m.grzeschik@...gutronix.de>,
Matthias Kaehlcke <mka@...omium.org>,
Flavio Suligoi <f.suligoi@...m.it>,
Mathias Nyman <mathias.nyman@...ux.intel.com>,
Bhuvanesh Surachari <Bhuvanesh_Surachari@...tor.com>,
Arnd Bergmann <arnd@...db.de>,
Paul Cercueil <paul@...pouillou.net>,
Linus Walleij <linus.walleij@...aro.org>,
linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v1 2/3] usb: phy: Add driver for the Realtek SoC USB
2.0/3.0 PHY
Hi Stanley,
kernel test robot noticed the following build warnings:
[auto build test WARNING on usb/usb-testing]
[also build test WARNING on usb/usb-next usb/usb-linus robh/for-next linus/master v6.4-rc2 next-20230519]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Stanley-Chang/usb-phy-Add-driver-for-the-Realtek-SoC-USB-2-0-3-0-PHY/20230519-130108
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link: https://lore.kernel.org/r/20230519045825.28369-2-stanley_chang%40realtek.com
patch subject: [PATCH v1 2/3] usb: phy: Add driver for the Realtek SoC USB 2.0/3.0 PHY
config: i386-allyesconfig
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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
# https://github.com/intel-lab-lkp/linux/commit/e5d8b867188b162bc49cc68373b1a25a179c01b3
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Stanley-Chang/usb-phy-Add-driver-for-the-Realtek-SoC-USB-2-0-3-0-PHY/20230519-130108
git checkout e5d8b867188b162bc49cc68373b1a25a179c01b3
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/usb/phy/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305201608.MBqXmFKF-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/usb/phy/phy-rtk-usb2.c:1049:11: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
else if (strcmp("page2", dir_name) == 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1053:6: note: uninitialized use occurs here
if (ret < 0)
^~~
drivers/usb/phy/phy-rtk-usb2.c:1049:7: note: remove the 'if' if its condition is always true
else if (strcmp("page2", dir_name) == 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1023:9: note: initialize the variable 'ret' to silence this warning
int ret, index;
^
= 0
>> drivers/usb/phy/phy-rtk-usb2.c:1026:18: warning: variable 'phy_data' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized]
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1036:7: note: uninitialized use occurs here
if (!phy_data) {
^~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1026:18: note: remove the condition if it is always true
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1024:27: note: initialize the variable 'phy_data' to silence this warning
struct phy_data *phy_data;
^
= NULL
>> drivers/usb/phy/phy-rtk-usb2.c:1088:18: warning: variable 'regAddr' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized]
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1099:7: note: uninitialized use occurs here
if (!regAddr) {
^~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1088:18: note: remove the condition if it is always true
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb2.c:1078:26: note: initialize the variable 'regAddr' to silence this warning
struct reg_addr *regAddr;
^
= NULL
3 warnings generated.
--
>> drivers/usb/phy/phy-rtk-usb3.c:532:18: warning: variable 'phy_data' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized]
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:542:7: note: uninitialized use occurs here
if (!phy_data) {
^~~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:532:18: note: remove the condition if it is always true
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:530:27: note: initialize the variable 'phy_data' to silence this warning
struct phy_data *phy_data;
^
= NULL
>> drivers/usb/phy/phy-rtk-usb3.c:583:18: warning: variable 'regAddr' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized]
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:594:7: note: uninitialized use occurs here
if (!regAddr) {
^~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:583:18: note: remove the condition if it is always true
for (index = 0; index < rtk_phy->phyN; index++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-rtk-usb3.c:573:26: note: initialize the variable 'regAddr' to silence this warning
struct reg_addr *regAddr;
^
= NULL
2 warnings generated.
vim +1049 drivers/usb/phy/phy-rtk-usb2.c
1013
1014 static int rtk_usb2_set_parameter_show(struct seq_file *s, void *unused)
1015 {
1016 struct rtk_usb_phy *rtk_phy = s->private;
1017 const struct file *file = s->file;
1018 const char *file_name = file_dentry(file)->d_iname;
1019 struct dentry *p_dentry = file_dentry(file)->d_parent;
1020 const char *dir_name = p_dentry->d_iname;
1021 struct dentry *pp_dentry = p_dentry->d_parent;
1022 const char *phy_dir_name = pp_dentry->d_iname;
1023 int ret, index;
1024 struct phy_data *phy_data;
1025
> 1026 for (index = 0; index < rtk_phy->phyN; index++) {
1027 size_t sz = 30;
1028 char name[30] = {0};
1029
1030 snprintf(name, sz, "phy%d", index);
1031 if (strncmp(name, phy_dir_name, strlen(name)) == 0) {
1032 phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
1033 break;
1034 }
1035 }
1036 if (!phy_data) {
1037 dev_err(rtk_phy->dev,
1038 "%s: No phy_data for %s/%s/%s\n",
1039 __func__, phy_dir_name, dir_name, file_name);
1040 return -EINVAL;
1041 }
1042
1043 if (strcmp("page0", dir_name) == 0)
1044 ret = __get_parameter_at_page(s, rtk_phy, phy_data->page0,
1045 dir_name, file_name);
1046 else if (strcmp("page1", dir_name) == 0)
1047 ret = __get_parameter_at_page(s, rtk_phy, phy_data->page1,
1048 dir_name, file_name);
> 1049 else if (strcmp("page2", dir_name) == 0)
1050 ret = __get_parameter_at_page(s, rtk_phy, phy_data->page2,
1051 dir_name, file_name);
1052
1053 if (ret < 0)
1054 return ret;
1055
1056 seq_puts(s, "Set phy parameter by following command\n");
1057 seq_printf(s, "echo \"value\" > %s/%s/%s\n",
1058 phy_dir_name, dir_name, file_name);
1059
1060 return 0;
1061 }
1062
1063 static int rtk_usb2_set_parameter_open(struct inode *inode, struct file *file)
1064 {
1065 return single_open(file, rtk_usb2_set_parameter_show, inode->i_private);
1066 }
1067
1068 static ssize_t rtk_usb2_set_parameter_write(struct file *file,
1069 const char __user *ubuf, size_t count, loff_t *ppos)
1070 {
1071 const char *file_name = file_dentry(file)->d_iname;
1072 struct dentry *p_dentry = file_dentry(file)->d_parent;
1073 const char *dir_name = p_dentry->d_iname;
1074 struct dentry *pp_dentry = p_dentry->d_parent;
1075 const char *phy_dir_name = pp_dentry->d_iname;
1076 struct seq_file *s = file->private_data;
1077 struct rtk_usb_phy *rtk_phy = s->private;
1078 struct reg_addr *regAddr;
1079 struct phy_data *phy_data;
1080 int ret = 0;
1081 char buffer[40] = {0};
1082 int index;
1083
1084 if (copy_from_user(&buffer, ubuf,
1085 min_t(size_t, sizeof(buffer) - 1, count)))
1086 return -EFAULT;
1087
> 1088 for (index = 0; index < rtk_phy->phyN; index++) {
1089 size_t sz = 30;
1090 char name[30] = {0};
1091
1092 snprintf(name, sz, "phy%d", index);
1093 if (strncmp(name, phy_dir_name, strlen(name)) == 0) {
1094 regAddr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
1095 phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
1096 break;
1097 }
1098 }
1099 if (!regAddr) {
1100 dev_err(rtk_phy->dev,
1101 "%s: No regAddr for %s/%s/%s\n",
1102 __func__, phy_dir_name, dir_name, file_name);
1103 return -EINVAL;
1104 }
1105 if (!phy_data) {
1106 dev_err(rtk_phy->dev,
1107 "%s: No phy_data for %s/%s/%s\n",
1108 __func__, phy_dir_name, dir_name, file_name);
1109 return -EINVAL;
1110 }
1111
1112 if (strcmp("page0", dir_name) == 0) {
1113 rtk_usb_phy_set_page(regAddr, 0);
1114 ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
1115 phy_data->page0, dir_name, file_name, buffer);
1116 } else if (strcmp("page1", dir_name) == 0) {
1117 rtk_usb_phy_set_page(regAddr, 1);
1118 ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
1119 phy_data->page1, dir_name, file_name, buffer);
1120 } else if (strcmp("page2", dir_name) == 0) {
1121 rtk_usb_phy_set_page(regAddr, 2);
1122 ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
1123 phy_data->page2, dir_name, file_name, buffer);
1124 }
1125 if (ret < 0)
1126 return ret;
1127
1128 return count;
1129 }
1130
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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