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BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: cros-kernel-buildreports@googlegroups.com tree: https://android.googlesource.com/kernel/common android16-6.12 head: 793c58ba801e0ec6ed0c3b71d1a1f091a42d299c commit: c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43 [1/1] usb: gadget: f_hid: don't call cdev_init while cdev in use :::::: branch date: 18 hours ago :::::: commit date: 7 months ago config: arm-randconfig-2200-20261113 (https://download.01.org/0day-ci/archive/20261114/202611141744.L7RBYVUc-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 8621950157210c1fa68f20f0614cb51310ec9dff) smatch: v0.5.0-9187-g5189e3fb 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202611141744.L7RBYVUc-lkp@intel.com/ smatch warnings: drivers/usb/gadget/function/f_hid.c:1276 hidg_bind() warn: missing error code 'status' vim +/status +1276 drivers/usb/gadget/function/f_hid.c 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1161 cb382536052fcc drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1162 static int hidg_bind(struct usb_configuration *c, struct usb_function *f) 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1163 { 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1164 struct usb_ep *ep; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1165 struct f_hidg *hidg = func_to_hidg(f); 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1166 struct usb_string *us; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1167 int status; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1168 a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1169 hidg->get_req = usb_ep_alloc_request(c->cdev->gadget->ep0, GFP_ATOMIC); a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1170 if (!hidg->get_req) a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1171 return -ENOMEM; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1172 a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1173 hidg->get_req->zero = 0; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1174 hidg->get_req->complete = hidg_get_report_complete; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1175 hidg->get_req->context = hidg; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1176 hidg->get_report_returned = true; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1177 cb382536052fcc drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1178 /* maybe allocate device-global string IDs, and patch descriptors */ 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1179 us = usb_gstrings_attach(c->cdev, ct_func_strings, 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1180 ARRAY_SIZE(ct_func_string_defs)); 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1181 if (IS_ERR(us)) 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1182 return PTR_ERR(us); 5ca8d3ec9970f4 drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1183 hidg_interface_desc.iInterface = us[CT_FUNC_HID_IDX].id; cb382536052fcc drivers/usb/gadget/function/f_hid.c Andrzej Pietrasiewicz 2014-11-06 1184 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1185 /* allocate instance-specific interface IDs, and patch descriptors */ 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1186 status = usb_interface_id(c, f); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1187 if (status < 0) 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1188 goto fail; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1189 hidg_interface_desc.bInterfaceNumber = status; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1190 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1191 /* allocate instance-specific endpoints */ 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1192 status = -ENODEV; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1193 ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_in_ep_desc); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1194 if (!ep) 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1195 goto fail; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1196 hidg->in_ep = ep; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1197 d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1198 hidg->out_ep = NULL; d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1199 if (hidg->use_out_ep) { 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1200 ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_out_ep_desc); 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1201 if (!ep) 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1202 goto fail; 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1203 hidg->out_ep = ep; d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1204 } d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1205 d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1206 /* used only if use_out_ep == 1 */ d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1207 hidg->set_report_buf = NULL; 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1208 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1209 /* set descriptor dynamic values */ 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1210 hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1211 hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1212 hidg_interface_desc.bNumEndpoints = hidg->use_out_ep ? 2 : 1; b3c4ec71ec413c drivers/usb/gadget/function/f_hid.c Abdulhadi Mohamed 2017-07-19 1213 hidg->protocol = HID_REPORT_PROTOCOL; afcff6dc690e24 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-07-21 1214 hidg->idle = 1; dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1215 hidg_ss_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1216 hidg_ss_in_comp_desc.wBytesPerInterval = dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1217 cpu_to_le16(hidg->report_length); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1218 hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1219 hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1220 hidg_ss_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1221 hidg_ss_out_comp_desc.wBytesPerInterval = dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1222 cpu_to_le16(hidg->report_length); 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1223 hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1224 hidg_fs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); f286d487e9283a drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2015-03-27 1225 /* f286d487e9283a drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2015-03-27 1226 * We can use hidg_desc struct here but we should not relay f286d487e9283a drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2015-03-27 1227 * that its content won't change after returning from this function. f286d487e9283a drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2015-03-27 1228 */ 74388368927e9c drivers/usb/gadget/function/f_hid.c Terry Junge 2025-03-12 1229 hidg_desc.rpt_desc.bDescriptorType = HID_DT_REPORT; 74388368927e9c drivers/usb/gadget/function/f_hid.c Terry Junge 2025-03-12 1230 hidg_desc.rpt_desc.wDescriptorLength = 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1231 cpu_to_le16(hidg->report_desc_length); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1232 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1233 hidg_hs_in_ep_desc.bEndpointAddress = 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1234 hidg_fs_in_ep_desc.bEndpointAddress; 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1235 hidg_hs_out_ep_desc.bEndpointAddress = 99c515005857ff drivers/usb/gadget/f_hid.c Daniel Mack 2012-06-13 1236 hidg_fs_out_ep_desc.bEndpointAddress; 10287baec761d3 drivers/usb/gadget/f_hid.c Sebastian Andrzej Siewior 2012-10-22 1237 dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1238 hidg_ss_in_ep_desc.bEndpointAddress = dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1239 hidg_fs_in_ep_desc.bEndpointAddress; dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1240 hidg_ss_out_ep_desc.bEndpointAddress = dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1241 hidg_fs_out_ep_desc.bEndpointAddress; dbf499cf720a00 drivers/usb/gadget/function/f_hid.c Janusz Dziedzic 2016-11-03 1242 d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1243 if (hidg->use_out_ep) d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1244 status = usb_assign_descriptors(f, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1245 hidg_fs_descriptors_intout, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1246 hidg_hs_descriptors_intout, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1247 hidg_ss_descriptors_intout, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1248 hidg_ss_descriptors_intout); d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1249 else d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1250 status = usb_assign_descriptors(f, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1251 hidg_fs_descriptors_ssreport, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1252 hidg_hs_descriptors_ssreport, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1253 hidg_ss_descriptors_ssreport, d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1254 hidg_ss_descriptors_ssreport); d7428bc26fc767 drivers/usb/gadget/function/f_hid.c Maxim Devaev 2021-08-21 1255 10287baec761d3 drivers/usb/gadget/f_hid.c Sebastian Andrzej Siewior 2012-10-22 1256 if (status) 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1257 goto fail; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1258 749494b6bdbbaf drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2017-01-24 1259 hidg->write_pending = 1; 749494b6bdbbaf drivers/usb/gadget/function/f_hid.c Krzysztof Opasiak 2017-01-24 1260 hidg->req = NULL; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1261 a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1262 INIT_WORK(&hidg->work, get_report_workqueue_handler); a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1263 hidg->workqueue = alloc_workqueue("report_work", a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1264 WQ_FREEZABLE | a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1265 WQ_MEM_RECLAIM, a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1266 1); a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1267 a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1268 if (!hidg->workqueue) { a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1269 status = -ENOMEM; 0ab3ae768c4847 drivers/usb/gadget/function/f_hid.c Yuhao Jiang 2025-06-23 1270 goto fail_free_descs; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1271 } 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1272 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1273 /* create char device */ c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 1274 hidg->cdev = cdev_alloc(); c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 1275 if (!hidg->cdev) c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 @1276 goto fail_free_all; c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 1277 hidg->cdev->ops = &f_hidg_fops; c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 1278 c6c0d13db5d0f8 drivers/usb/gadget/function/f_hid.c Michael Zimmermann 2026-03-27 1279 status = cdev_device_add(hidg->cdev, &hidg->dev); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1280 if (status) 0ab3ae768c4847 drivers/usb/gadget/function/f_hid.c Yuhao Jiang 2025-06-23 1281 goto fail_free_all; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1282 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1283 return 0; 0ab3ae768c4847 drivers/usb/gadget/function/f_hid.c Yuhao Jiang 2025-06-23 1284 fail_free_all: a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1285 destroy_workqueue(hidg->workqueue); 0ab3ae768c4847 drivers/usb/gadget/function/f_hid.c Yuhao Jiang 2025-06-23 1286 fail_free_descs: d12a8727171c77 drivers/usb/gadget/function/f_hid.c Pavitrakumar Managutte 2014-10-22 1287 usb_free_all_descriptors(f); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1288 fail: 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1289 ERROR(f->config->cdev, "hidg_bind FAILED\n"); 14794d7133d0f1 drivers/usb/gadget/function/f_hid.c Felipe F. Tonello 2016-08-23 1290 if (hidg->req != NULL) 14794d7133d0f1 drivers/usb/gadget/function/f_hid.c Felipe F. Tonello 2016-08-23 1291 free_ep_req(hidg->in_ep, hidg->req); 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1292 a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1293 usb_ep_free_request(c->cdev->gadget->ep0, hidg->get_req); a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1294 hidg->get_req = NULL; a139c98f760efa drivers/usb/gadget/function/f_hid.c Chris Wulff 2024-08-17 1295 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1296 return status; 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1297 } 71adf118946957 drivers/usb/gadget/f_hid.c Fabien Chouteau 2010-04-08 1298 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki