Hi Abhishek, kernel test robot noticed the following build warnings: [auto build test WARNING on chrome-platform/for-next] [also build test WARNING on chrome-platform/for-firmware-next usb/usb-testing usb/usb-next usb/usb-linus westeri-thunderbolt/next linus/master v6.12-rc5 next-20241031] [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/Abhishek-Pandit-Subedi/usb-typec-Add-driver-for-Thunderbolt-3-Alternate-Mode/20241031-053304 base: https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git for-next patch link: https://lore.kernel.org/r/20241030142833.v2.5.I142fc0c09df58689b98f0cebf1c5e48b9d4fa800%40changeid patch subject: [PATCH v2 5/7] platform/chrome: cros_ec_typec: Displayport support config: arm-defconfig (https://download.01.org/0day-ci/archive/20241101/202411010134.yJIy0Z3P-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241101/202411010134.yJIy0Z3P-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411010134.yJIy0Z3P-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/platform/chrome/cros_typec_altmode.c:40:13: warning: unused function 'cros_typec_altmode_work' [-Wunused-function] static void cros_typec_altmode_work(struct work_struct *work) ^ >> drivers/platform/chrome/cros_typec_altmode.c:212:39: warning: unused variable 'cros_typec_altmode_ops' [-Wunused-const-variable] static const struct typec_altmode_ops cros_typec_altmode_ops = { ^ 2 warnings generated. vim +/cros_typec_altmode_ops +212 drivers/platform/chrome/cros_typec_altmode.c 39 > 40 static void cros_typec_altmode_work(struct work_struct *work) 41 { 42 struct cros_typec_altmode_data *data = 43 container_of(work, struct cros_typec_altmode_data, work); 44 45 if (typec_altmode_vdm(data->alt, data->header, data->vdo_data, 46 data->vdo_size)) 47 dev_err(&data->alt->dev, "VDM 0x%x failed", data->header); 48 49 data->header = 0; 50 data->vdo_data = NULL; 51 data->vdo_size = 0; 52 } 53 54 static int cros_typec_altmode_enter(struct typec_altmode *alt, u32 *vdo) 55 { 56 struct cros_typec_altmode_data *data = typec_altmode_get_drvdata(alt); 57 struct ec_params_typec_control req = { 58 .port = data->port->port_num, 59 .command = TYPEC_CONTROL_COMMAND_ENTER_MODE, 60 }; 61 int svdm_version; 62 int ret; 63 64 if (!data->ap_mode_entry) { 65 const struct typec_altmode *partner = 66 typec_altmode_get_partner(alt); 67 dev_warn(&partner->dev, 68 "EC does not support ap driven mode entry\n"); 69 return -EOPNOTSUPP; 70 } 71 72 if (data->sid == USB_TYPEC_DP_SID) 73 req.mode_to_enter = CROS_EC_ALTMODE_DP; 74 else 75 return -EOPNOTSUPP; 76 77 ret = cros_ec_cmd(data->port->typec_data->ec, 0, EC_CMD_TYPEC_CONTROL, 78 &req, sizeof(req), NULL, 0); 79 if (ret < 0) 80 return ret; 81 82 svdm_version = typec_altmode_get_svdm_version(alt); 83 if (svdm_version < 0) 84 return svdm_version; 85 86 data->header = VDO(data->sid, 1, svdm_version, CMD_ENTER_MODE); 87 data->header |= VDO_OPOS(data->mode); 88 data->header |= VDO_CMDT(CMDT_RSP_ACK); 89 90 data->vdo_data = NULL; 91 data->vdo_size = 1; 92 93 schedule_work(&data->work); 94 95 return ret; 96 } 97 98 static int cros_typec_altmode_exit(struct typec_altmode *alt) 99 { 100 struct cros_typec_altmode_data *data = typec_altmode_get_drvdata(alt); 101 struct ec_params_typec_control req = { 102 .port = data->port->port_num, 103 .command = TYPEC_CONTROL_COMMAND_EXIT_MODES, 104 }; 105 int svdm_version; 106 int ret; 107 108 if (!data->ap_mode_entry) { 109 const struct typec_altmode *partner = 110 typec_altmode_get_partner(alt); 111 dev_warn(&partner->dev, 112 "EC does not support ap driven mode entry\n"); 113 return -EOPNOTSUPP; 114 } 115 116 ret = cros_ec_cmd(data->port->typec_data->ec, 0, EC_CMD_TYPEC_CONTROL, 117 &req, sizeof(req), NULL, 0); 118 119 if (ret < 0) 120 return ret; 121 122 svdm_version = typec_altmode_get_svdm_version(alt); 123 if (svdm_version < 0) 124 return svdm_version; 125 126 data->header = VDO(data->sid, 1, svdm_version, CMD_EXIT_MODE); 127 data->header |= VDO_OPOS(data->mode); 128 data->header |= VDO_CMDT(CMDT_RSP_ACK); 129 130 data->vdo_data = NULL; 131 data->vdo_size = 1; 132 133 schedule_work(&data->work); 134 135 return ret; 136 } 137 138 static int cros_typec_displayport_vdm(struct typec_altmode *alt, u32 header, 139 const u32 *data, int count) 140 { 141 struct cros_typec_altmode_data *adata = typec_altmode_get_drvdata(alt); 142 143 int cmd_type = PD_VDO_CMDT(header); 144 int cmd = PD_VDO_CMD(header); 145 int svdm_version; 146 147 if (!adata->ap_mode_entry) { 148 const struct typec_altmode *partner = 149 typec_altmode_get_partner(alt); 150 dev_warn(&partner->dev, 151 "EC does not support ap driven mode entry\n"); 152 return -EOPNOTSUPP; 153 } 154 155 svdm_version = typec_altmode_get_svdm_version(alt); 156 if (svdm_version < 0) 157 return svdm_version; 158 159 switch (cmd_type) { 160 case CMDT_INIT: 161 if (PD_VDO_SVDM_VER(header) < svdm_version) { 162 typec_partner_set_svdm_version(adata->port->partner, 163 PD_VDO_SVDM_VER(header)); 164 svdm_version = PD_VDO_SVDM_VER(header); 165 } 166 167 adata->header = VDO(adata->sid, 1, svdm_version, cmd); 168 adata->header |= VDO_OPOS(adata->mode); 169 170 /* 171 * DP_CMD_CONFIGURE: We can't actually do anything with the 172 * provided VDO yet so just send back an ACK. 173 * 174 * DP_CMD_STATUS_UPDATE: We wait for Mux changes to send 175 * DPStatus Acks. 176 */ 177 switch (cmd) { 178 case DP_CMD_CONFIGURE: 179 adata->am_data.dp.data.conf = *data; 180 adata->header |= VDO_CMDT(CMDT_RSP_ACK); 181 adata->am_data.dp.configured = true; 182 schedule_work(&adata->work); 183 break; 184 case DP_CMD_STATUS_UPDATE: 185 adata->am_data.dp.pending_status_update = true; 186 break; 187 default: 188 adata->header |= VDO_CMDT(CMDT_RSP_ACK); 189 schedule_work(&adata->work); 190 break; 191 } 192 193 break; 194 default: 195 break; 196 } 197 198 return 0; 199 } 200 201 static int cros_typec_altmode_vdm(struct typec_altmode *alt, u32 header, 202 const u32 *data, int count) 203 { 204 struct cros_typec_altmode_data *adata = typec_altmode_get_drvdata(alt); 205 206 if (adata->sid == USB_TYPEC_DP_SID) 207 return cros_typec_displayport_vdm(alt, header, data, count); 208 209 return -EINVAL; 210 } 211 > 212 static const struct typec_altmode_ops cros_typec_altmode_ops = { 213 .enter = cros_typec_altmode_enter, 214 .exit = cros_typec_altmode_exit, 215 .vdm = cros_typec_altmode_vdm, 216 }; 217 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
