tree: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next head: 3196f73ff8444f6b8bfce3dce1900b4eae27c324 commit: 0cdab4c202ea0dd241ddaacf1d3a8a282590cb61 [49/82] usb: dwc3: gadget: remove unnecessary 'dwc' parameter config: x86_64-randconfig-s2-05161806 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: git checkout 0cdab4c202ea0dd241ddaacf1d3a8a282590cb61 # save the attached .config to linux build tree make ARCH=x86_64 Note: the balbi-usb/next HEAD 3196f73ff8444f6b8bfce3dce1900b4eae27c324 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): In file included from arch/x86/include/asm/bug.h:83:0, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/gfp.h:5, from include/linux/slab.h:15, from drivers/usb/dwc3/gadget.c:13: drivers/usb/dwc3/gadget.c: In function 'dwc3_gadget_ep_cleanup_completed_requests': >> drivers/usb/dwc3/gadget.c:2375:19: error: 'dwc' undeclared (first use in this function) dev_WARN_ONCE(dwc->dev, ^ include/asm-generic/bug.h:98:50: note: in definition of macro '__WARN_printf' #define __WARN_printf(arg...) do { __warn_printk(arg); __WARN(); } while (0) ^~~ include/asm-generic/bug.h:154:3: note: in expansion of macro 'WARN' WARN(1, format); \ ^~~~ include/linux/device.h:1506:2: note: in expansion of macro 'WARN_ONCE' WARN_ONCE(condition, "%s %s: " format, \ ^~~~~~~~~ drivers/usb/dwc3/gadget.c:2375:5: note: in expansion of macro 'dev_WARN_ONCE' dev_WARN_ONCE(dwc->dev, ^~~~~~~~~~~~~ drivers/usb/dwc3/gadget.c:2375:19: note: each undeclared identifier is reported only once for each function it appears in dev_WARN_ONCE(dwc->dev, ^ include/asm-generic/bug.h:98:50: note: in definition of macro '__WARN_printf' #define __WARN_printf(arg...) do { __warn_printk(arg); __WARN(); } while (0) ^~~ include/asm-generic/bug.h:154:3: note: in expansion of macro 'WARN' WARN(1, format); \ ^~~~ include/linux/device.h:1506:2: note: in expansion of macro 'WARN_ONCE' WARN_ONCE(condition, "%s %s: " format, \ ^~~~~~~~~ drivers/usb/dwc3/gadget.c:2375:5: note: in expansion of macro 'dev_WARN_ONCE' dev_WARN_ONCE(dwc->dev, ^~~~~~~~~~~~~ vim +/dwc +2375 drivers/usb/dwc3/gadget.c e5ba5ec833 Pratyush Anand 2013-01-14 2316 0cdab4c202 Felipe Balbi 2018-03-27 2317 static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3_ep *dep, 0cdab4c202 Felipe Balbi 2018-03-27 2318 const struct dwc3_event_depevt *event, int status) e5ba5ec833 Pratyush Anand 2013-01-14 2319 { 31162af447 Felipe Balbi 2016-08-11 2320 struct dwc3_request *req, *n; e5ba5ec833 Pratyush Anand 2013-01-14 2321 struct dwc3_trb *trb; d6e10bf2ba Arnd Bergmann 2016-09-09 2322 bool ioc = false; e62c5bc573 Felipe Balbi 2016-10-25 2323 int ret = 0; e5ba5ec833 Pratyush Anand 2013-01-14 2324 31162af447 Felipe Balbi 2016-08-11 2325 list_for_each_entry_safe(req, n, &dep->started_list, list) { 1f512119a0 Felipe Balbi 2016-08-12 2326 unsigned length; e5b36ae2f8 Felipe Balbi 2016-08-10 2327 int chain; e5b36ae2f8 Felipe Balbi 2016-08-10 2328 1f512119a0 Felipe Balbi 2016-08-12 2329 length = req->request.length; 1f512119a0 Felipe Balbi 2016-08-12 2330 chain = req->num_pending_sgs > 0; 31162af447 Felipe Balbi 2016-08-11 2331 if (chain) { 1f512119a0 Felipe Balbi 2016-08-12 2332 struct scatterlist *sg = req->sg; 31162af447 Felipe Balbi 2016-08-11 2333 struct scatterlist *s; 1f512119a0 Felipe Balbi 2016-08-12 2334 unsigned int pending = req->num_pending_sgs; 31162af447 Felipe Balbi 2016-08-11 2335 unsigned int i; ac7bdcc1b3 Felipe Balbi 2015-11-16 2336 1f512119a0 Felipe Balbi 2016-08-12 2337 for_each_sg(sg, s, pending, i) { 737f1ae255 Felipe Balbi 2016-08-11 2338 trb = &dep->trb_pool[dep->trb_dequeue]; c7de573471 Felipe Balbi 2016-07-29 2339 7282c4ef0b Felipe Balbi 2016-10-25 2340 if (trb->ctrl & DWC3_TRB_CTRL_HWO) 7282c4ef0b Felipe Balbi 2016-10-25 2341 break; 7282c4ef0b Felipe Balbi 2016-10-25 2342 1f512119a0 Felipe Balbi 2016-08-12 2343 req->sg = sg_next(s); 1f512119a0 Felipe Balbi 2016-08-12 2344 req->num_pending_sgs--; c7de573471 Felipe Balbi 2016-07-29 2345 0cdab4c202 Felipe Balbi 2018-03-27 2346 ret = dwc3_gadget_ep_reclaim_completed_trb(dep, 0cdab4c202 Felipe Balbi 2018-03-27 2347 req, trb, event, status, 2b03814fc1 Felipe Balbi 2018-03-26 2348 chain); e5ba5ec833 Pratyush Anand 2013-01-14 2349 if (ret) e5ba5ec833 Pratyush Anand 2013-01-14 2350 break; 31162af447 Felipe Balbi 2016-08-11 2351 } 31162af447 Felipe Balbi 2016-08-11 2352 } else { 31162af447 Felipe Balbi 2016-08-11 2353 trb = &dep->trb_pool[dep->trb_dequeue]; 0cdab4c202 Felipe Balbi 2018-03-27 2354 ret = dwc3_gadget_ep_reclaim_completed_trb(dep, req, 0cdab4c202 Felipe Balbi 2018-03-27 2355 trb, event, status, chain); 31162af447 Felipe Balbi 2016-08-11 2356 } e5ba5ec833 Pratyush Anand 2013-01-14 2357 d6e5a549cc Felipe Balbi 2017-04-07 2358 if (req->unaligned || req->zero) { c6267a5163 Felipe Balbi 2017-01-05 2359 trb = &dep->trb_pool[dep->trb_dequeue]; 0cdab4c202 Felipe Balbi 2018-03-27 2360 ret = dwc3_gadget_ep_reclaim_completed_trb(dep, req, 0cdab4c202 Felipe Balbi 2018-03-27 2361 trb, event, status, false); c6267a5163 Felipe Balbi 2017-01-05 2362 req->unaligned = false; d6e5a549cc Felipe Balbi 2017-04-07 2363 req->zero = false; c6267a5163 Felipe Balbi 2017-01-05 2364 } c6267a5163 Felipe Balbi 2017-01-05 2365 e62c5bc573 Felipe Balbi 2016-10-25 2366 req->request.actual = length - req->remaining; 1f512119a0 Felipe Balbi 2016-08-12 2367 f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2368 if (req->request.actual < length || req->num_pending_sgs) { f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2369 /* f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2370 * There could be a scenario where the whole req can't f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2371 * be mapped into available TRB's. In that case, we need f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2372 * to kick transfer again if (req->num_pending_sgs > 0) f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2373 */ f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2374 if (req->num_pending_sgs) { f9db4fce81 Anurag Kumar Vulisha 2018-03-27 @2375 dev_WARN_ONCE(dwc->dev, f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2376 (req->request.actual == length), f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2377 "There are some pending sg's that needs to be queued again\n"); 7fdca76649 Felipe Balbi 2017-09-05 2378 return __dwc3_gadget_kick_transfer(dep); f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2379 } f9db4fce81 Anurag Kumar Vulisha 2018-03-27 2380 } 1f512119a0 Felipe Balbi 2016-08-12 2381 e5ba5ec833 Pratyush Anand 2013-01-14 2382 dwc3_gadget_giveback(dep, req, status); e5ba5ec833 Pratyush Anand 2013-01-14 2383 d6e10bf2ba Arnd Bergmann 2016-09-09 2384 if (ret) { d6e10bf2ba Arnd Bergmann 2016-09-09 2385 if ((event->status & DEPEVT_STATUS_IOC) && d6e10bf2ba Arnd Bergmann 2016-09-09 2386 (trb->ctrl & DWC3_TRB_CTRL_IOC)) d6e10bf2ba Arnd Bergmann 2016-09-09 2387 ioc = true; d115d7050a Ville Syrjälä 2015-08-31 2388 break; 31162af447 Felipe Balbi 2016-08-11 2389 } d6e10bf2ba Arnd Bergmann 2016-09-09 2390 } d115d7050a Ville Syrjälä 2015-08-31 2391 4cb4221764 Felipe Balbi 2016-05-18 2392 /* 4cb4221764 Felipe Balbi 2016-05-18 2393 * Our endpoint might get disabled by another thread during 4cb4221764 Felipe Balbi 2016-05-18 2394 * dwc3_gadget_giveback(). If that happens, we're just gonna return 1 4cb4221764 Felipe Balbi 2016-05-18 2395 * early on so DWC3_EP_BUSY flag gets cleared 4cb4221764 Felipe Balbi 2016-05-18 2396 */ 4cb4221764 Felipe Balbi 2016-05-18 2397 if (!dep->endpoint.desc) 4cb4221764 Felipe Balbi 2016-05-18 2398 return 1; 4cb4221764 Felipe Balbi 2016-05-18 2399 cdc359dd87 Pratyush Anand 2013-01-14 2400 if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && aa3342c8bb Felipe Balbi 2016-03-14 2401 list_empty(&dep->started_list)) { aa3342c8bb Felipe Balbi 2016-03-14 2402 if (list_empty(&dep->pending_list)) { cdc359dd87 Pratyush Anand 2013-01-14 2403 /* cdc359dd87 Pratyush Anand 2013-01-14 2404 * If there is no entry in request list then do cdc359dd87 Pratyush Anand 2013-01-14 2405 * not issue END TRANSFER now. Just set PENDING cdc359dd87 Pratyush Anand 2013-01-14 2406 * flag, so that END TRANSFER is issued when an cdc359dd87 Pratyush Anand 2013-01-14 2407 * entry is added into request list. cdc359dd87 Pratyush Anand 2013-01-14 2408 */ cdc359dd87 Pratyush Anand 2013-01-14 2409 dep->flags = DWC3_EP_PENDING_REQUEST; cdc359dd87 Pratyush Anand 2013-01-14 2410 } else { 0cdab4c202 Felipe Balbi 2018-03-27 2411 dwc3_stop_active_transfer(dep, true); cdc359dd87 Pratyush Anand 2013-01-14 2412 dep->flags = DWC3_EP_ENABLED; cdc359dd87 Pratyush Anand 2013-01-14 2413 } 7efea86c28 Pratyush Anand 2013-01-14 2414 return 1; 7efea86c28 Pratyush Anand 2013-01-14 2415 } 7efea86c28 Pratyush Anand 2013-01-14 2416 d6e10bf2ba Arnd Bergmann 2016-09-09 2417 if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && ioc) 9cad39fe4e Konrad Leszczynski 2016-02-08 2418 return 0; d6e10bf2ba Arnd Bergmann 2016-09-09 2419 72246da40f Felipe Balbi 2011-08-19 2420 return 1; 72246da40f Felipe Balbi 2011-08-19 2421 } 72246da40f Felipe Balbi 2011-08-19 2422 :::::: The code at line 2375 was first introduced by commit :::::: f9db4fce81eaf0699c2d4fea890587b4de22cbb2 usb: dwc3: gadget: Correct the logic for queuing sgs :::::: TO: Anurag Kumar Vulisha <anuragku@xxxxxxxxxx> :::::: CC: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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