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X-CSE-ConnectionGUID: mACIzYLGRQ6b2pPu2iAhlg== X-CSE-MsgGUID: q8ytHOnDSE+v54RF5QyFyQ== X-IronPort-AV: E=McAfee;i="6800,10657,11939"; a="969632" X-IronPort-AV: E=Sophos;i="6.27,167,1787036400"; d="scan'208";a="969632" Received: from fmviesa011.fm.intel.com ([10.60.135.151]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2026 03:44:48 -0700 X-CSE-ConnectionGUID: fHkuxzU9RXqiOcw30PrY8Q== X-CSE-MsgGUID: s0EeqoHiRze9Eqmas2Xgvw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,167,1787036400"; d="scan'208";a="4346035" Received: from igk-lkp-server01.igk.intel.com (HELO 3c253b998be3) ([10.211.93.152]) by fmviesa011.fm.intel.com with ESMTP; 19 Oct 2026 03:44:46 -0700 Received: from kbuild by 3c253b998be3 with local (Exim 4.98.2) (envelope-from ) id 1xIkrD-000000005aV-39L4; Mon, 19 Oct 2026 10:44:43 +0000 Date: Mon, 19 Oct 2026 12:43:48 +0200 From: kernel test robot To: cros-kernel-buildreports@googlegroups.com Cc: oe-kbuild-all@lists.linux.dev Subject: [android-common:android16-6.12 0/2] drivers/usb/host/xhci-sideband.c:263: warning: Function parameter or struct member 'imod_interval' not described in 'xhci_sideband_create_interrupter' Message-ID: <202610191203.epVqln2n-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Hi Mathias, FYI, the error/warning still remains. tree: https://android.googlesource.com/kernel/common android16-6.12 head: 49f96790cc7636a02b5b36d2f486a318b80031f2 commit: 7b946a32948f90b198e3e51c824576458ceda3a4 [0/2] FROMLIST: xhci: sideband: add initial api to register a secondary interrupter entity config: i386-randconfig-2103-20261018 (https://download.01.org/0day-ci/archive/20261019/202610191203.epVqln2n-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261019/202610191203.epVqln2n-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202610191203.epVqln2n-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/usb/host/xhci-sideband.c:263: warning: Function parameter or struct member 'imod_interval' not described in 'xhci_sideband_create_interrupter' >> drivers/usb/host/xhci-sideband.c:345: warning: Function parameter or struct member 'type' not described in 'xhci_sideband_register' vim +263 drivers/usb/host/xhci-sideband.c 244 245 /** 246 * xhci_sideband_create_interrupter - creates a new interrupter for this sideband 247 * @sb: sideband instance for this usb device 248 * @num_seg: number of event ring segments to allocate 249 * @ip_autoclear: IP autoclearing support such as MSI implemented 250 * 251 * Sets up a xhci interrupter that can be used for this sideband accessed usb 252 * device. Transfer events for this device can be routed to this interrupters 253 * event ring by setting the 'Interrupter Target' field correctly when queueing 254 * the transfer TRBs. 255 * Once this interrupter is created the interrupter target ID can be obtained 256 * by calling xhci_sideband_interrupter_id() 257 * 258 * Returns 0 on success, negative error otherwise 259 */ 260 int 261 xhci_sideband_create_interrupter(struct xhci_sideband *sb, int num_seg, 262 bool ip_autoclear, u32 imod_interval) > 263 { 264 int ret = 0; 265 266 if (!sb || !sb->xhci) 267 return -ENODEV; 268 269 mutex_lock(&sb->mutex); 270 if (sb->ir) { 271 ret = -EBUSY; 272 goto out; 273 } 274 275 sb->ir = xhci_create_secondary_interrupter(xhci_to_hcd(sb->xhci), 276 num_seg, imod_interval); 277 if (!sb->ir) { 278 ret = -ENOMEM; 279 goto out; 280 } 281 282 sb->ir->ip_autoclear = ip_autoclear; 283 284 out: 285 mutex_unlock(&sb->mutex); 286 287 return ret; 288 } 289 EXPORT_SYMBOL_GPL(xhci_sideband_create_interrupter); 290 291 /** 292 * xhci_sideband_remove_interrupter - remove the interrupter from a sideband 293 * @sb: sideband instance for this usb device 294 * 295 * Removes a registered interrupt for a sideband. This would allow for other 296 * sideband users to utilize this interrupter. 297 */ 298 void 299 xhci_sideband_remove_interrupter(struct xhci_sideband *sb) 300 { 301 if (!sb || !sb->ir) 302 return; 303 304 mutex_lock(&sb->mutex); 305 xhci_remove_secondary_interrupter(xhci_to_hcd(sb->xhci), sb->ir); 306 307 sb->ir = NULL; 308 mutex_unlock(&sb->mutex); 309 } 310 EXPORT_SYMBOL_GPL(xhci_sideband_remove_interrupter); 311 312 /** 313 * xhci_sideband_interrupter_id - return the interrupter target id 314 * @sb: sideband instance for this usb device 315 * 316 * If a secondary xhci interrupter is set up for this usb device then this 317 * function returns the ID used by the interrupter. The sideband client 318 * needs to write this ID to the 'Interrupter Target' field of the transfer TRBs 319 * it queues on the endpoints transfer ring to ensure transfer completion event 320 * are written by xHC to the correct interrupter event ring. 321 * 322 * Returns interrupter id on success, negative error othgerwise 323 */ 324 int 325 xhci_sideband_interrupter_id(struct xhci_sideband *sb) 326 { 327 if (!sb || !sb->ir) 328 return -ENODEV; 329 330 return sb->ir->intr_num; 331 } 332 EXPORT_SYMBOL_GPL(xhci_sideband_interrupter_id); 333 334 /** 335 * xhci_sideband_register - register a sideband for a usb device 336 * @intf: usb interface associated with the sideband device 337 * 338 * Allows for clients to utilize XHCI interrupters and fetch transfer and event 339 * ring parameters for executing data transfers. 340 * 341 * Return: pointer to a new xhci_sideband instance if successful. NULL otherwise. 342 */ 343 struct xhci_sideband * 344 xhci_sideband_register(struct usb_interface *intf, enum xhci_sideband_type type) > 345 { 346 struct usb_device *udev = interface_to_usbdev(intf); 347 struct usb_hcd *hcd = bus_to_hcd(udev->bus); 348 struct xhci_hcd *xhci = hcd_to_xhci(hcd); 349 struct xhci_virt_device *vdev; 350 struct xhci_sideband *sb; 351 352 /* 353 * Make sure the usb device is connected to a xhci controller. Fail 354 * registration if the type is anything other than XHCI_SIDEBAND_VENDOR, 355 * as this is the only type that is currently supported by xhci-sideband. 356 */ 357 if (!udev->slot_id || type != XHCI_SIDEBAND_VENDOR) 358 return NULL; 359 360 sb = kzalloc_node(sizeof(*sb), GFP_KERNEL, dev_to_node(hcd->self.sysdev)); 361 if (!sb) 362 return NULL; 363 364 mutex_init(&sb->mutex); 365 366 /* check this device isn't already controlled via sideband */ 367 spin_lock_irq(&xhci->lock); 368 369 vdev = xhci->devs[udev->slot_id]; 370 371 if (!vdev || vdev->sideband) { 372 xhci_warn(xhci, "XHCI sideband for slot %d already in use\n", 373 udev->slot_id); 374 spin_unlock_irq(&xhci->lock); 375 kfree(sb); 376 return NULL; 377 } 378 379 sb->xhci = xhci; 380 sb->vdev = vdev; 381 sb->intf = intf; 382 sb->type = type; 383 vdev->sideband = sb; 384 385 spin_unlock_irq(&xhci->lock); 386 387 return sb; 388 } 389 EXPORT_SYMBOL_GPL(xhci_sideband_register); 390 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki