tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 93bf8b946e5f9a0b0c68155597b53fd8ccce2827 commit: 0a9e723f97367373133a4951f26a7b515223ca7b [2882/4500] csky: Coding convention del unnecessary definition config: csky-randconfig-p001-20210118 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=0a9e723f97367373133a4951f26a7b515223ca7b git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 0a9e723f97367373133a4951f26a7b515223ca7b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/staging/comedi/comedi_fops.c: In function 'comedi_mmap': >> drivers/staging/comedi/comedi_fops.c:2399:8: error: 'PAGE_SHARED' undeclared (first use in this function); did you mean 'VM_SHARED'? 2399 | PAGE_SHARED); | ^~~~~~~~~~~ | VM_SHARED drivers/staging/comedi/comedi_fops.c:2399:8: note: each undeclared identifier is reported only once for each function it appears in -- drivers/media/usb/cpia2/cpia2_core.c: In function 'cpia2_remap_buffer': >> drivers/media/usb/cpia2/cpia2_core.c:2410:66: error: 'PAGE_SHARED' undeclared (first use in this function) 2410 | if (remap_pfn_range(vma, start, page >> PAGE_SHIFT, PAGE_SIZE, PAGE_SHARED)) | ^~~~~~~~~~~ drivers/media/usb/cpia2/cpia2_core.c:2410:66: note: each undeclared identifier is reported only once for each function it appears in vim +2399 drivers/staging/comedi/comedi_fops.c ed9eccbe8970f6ee David Schleef 2008-11-04 2315 ed9eccbe8970f6ee David Schleef 2008-11-04 2316 static int comedi_mmap(struct file *file, struct vm_area_struct *vma) ed9eccbe8970f6ee David Schleef 2008-11-04 2317 { 20f083c07565cb75 Ian Abbott 2014-11-04 2318 struct comedi_file *cfp = file->private_data; 20f083c07565cb75 Ian Abbott 2014-11-04 2319 struct comedi_device *dev = cfp->dev; a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2320 struct comedi_subdevice *s; a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2321 struct comedi_async *async; b34aa86f12e8848b Ian Abbott 2014-04-10 2322 struct comedi_buf_map *bm = NULL; e36472145aa706c1 Ian Abbott 2019-06-25 2323 struct comedi_buf_page *buf; ed9eccbe8970f6ee David Schleef 2008-11-04 2324 unsigned long start = vma->vm_start; ed9eccbe8970f6ee David Schleef 2008-11-04 2325 unsigned long size; ed9eccbe8970f6ee David Schleef 2008-11-04 2326 int n_pages; ed9eccbe8970f6ee David Schleef 2008-11-04 2327 int i; e36472145aa706c1 Ian Abbott 2019-06-25 2328 int retval = 0; 3ffab428f40849ed Bernd Porr 2011-11-08 2329 b34aa86f12e8848b Ian Abbott 2014-04-10 2330 /* c1e8d7c6a7a682e1 Michel Lespinasse 2020-06-08 2331 * 'trylock' avoids circular dependency with current->mm->mmap_lock b34aa86f12e8848b Ian Abbott 2014-04-10 2332 * and down-reading &dev->attach_lock should normally succeed without b34aa86f12e8848b Ian Abbott 2014-04-10 2333 * contention unless the device is in the process of being attached b34aa86f12e8848b Ian Abbott 2014-04-10 2334 * or detached. b34aa86f12e8848b Ian Abbott 2014-04-10 2335 */ b34aa86f12e8848b Ian Abbott 2014-04-10 2336 if (!down_read_trylock(&dev->attach_lock)) b34aa86f12e8848b Ian Abbott 2014-04-10 2337 return -EAGAIN; a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2338 ed9eccbe8970f6ee David Schleef 2008-11-04 2339 if (!dev->attached) { 272850f07c47ab1b H Hartley Sweeten 2013-11-26 2340 dev_dbg(dev->class_dev, "no driver attached\n"); ed9eccbe8970f6ee David Schleef 2008-11-04 2341 retval = -ENODEV; ed9eccbe8970f6ee David Schleef 2008-11-04 2342 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2343 } a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2344 476b847733636ce5 Greg Kroah-Hartman 2008-11-13 2345 if (vma->vm_flags & VM_WRITE) 20f083c07565cb75 Ian Abbott 2014-11-04 2346 s = comedi_file_write_subdevice(file); 476b847733636ce5 Greg Kroah-Hartman 2008-11-13 2347 else 20f083c07565cb75 Ian Abbott 2014-11-04 2348 s = comedi_file_read_subdevice(file); a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2349 if (!s) { ed9eccbe8970f6ee David Schleef 2008-11-04 2350 retval = -EINVAL; ed9eccbe8970f6ee David Schleef 2008-11-04 2351 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2352 } a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2353 ed9eccbe8970f6ee David Schleef 2008-11-04 2354 async = s->async; a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2355 if (!async) { ed9eccbe8970f6ee David Schleef 2008-11-04 2356 retval = -EINVAL; ed9eccbe8970f6ee David Schleef 2008-11-04 2357 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2358 } ed9eccbe8970f6ee David Schleef 2008-11-04 2359 ed9eccbe8970f6ee David Schleef 2008-11-04 2360 if (vma->vm_pgoff != 0) { 272850f07c47ab1b H Hartley Sweeten 2013-11-26 2361 dev_dbg(dev->class_dev, "mmap() offset must be 0.\n"); ed9eccbe8970f6ee David Schleef 2008-11-04 2362 retval = -EINVAL; ed9eccbe8970f6ee David Schleef 2008-11-04 2363 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2364 } ed9eccbe8970f6ee David Schleef 2008-11-04 2365 ed9eccbe8970f6ee David Schleef 2008-11-04 2366 size = vma->vm_end - vma->vm_start; ed9eccbe8970f6ee David Schleef 2008-11-04 2367 if (size > async->prealloc_bufsz) { ed9eccbe8970f6ee David Schleef 2008-11-04 2368 retval = -EFAULT; ed9eccbe8970f6ee David Schleef 2008-11-04 2369 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2370 } 44b8c793fc0d6306 Sandhya Bankar 2016-03-06 2371 if (offset_in_page(size)) { ed9eccbe8970f6ee David Schleef 2008-11-04 2372 retval = -EFAULT; ed9eccbe8970f6ee David Schleef 2008-11-04 2373 goto done; ed9eccbe8970f6ee David Schleef 2008-11-04 2374 } ed9eccbe8970f6ee David Schleef 2008-11-04 2375 ec9d0754e0c64013 sayli karnik 2016-09-20 2376 n_pages = vma_pages(vma); b34aa86f12e8848b Ian Abbott 2014-04-10 2377 b34aa86f12e8848b Ian Abbott 2014-04-10 2378 /* get reference to current buf map (if any) */ b34aa86f12e8848b Ian Abbott 2014-04-10 2379 bm = comedi_buf_map_from_subdev_get(s); af93da31634d6d55 Ian Abbott 2013-11-08 2380 if (!bm || n_pages > bm->n_pages) { af93da31634d6d55 Ian Abbott 2013-11-08 2381 retval = -EINVAL; af93da31634d6d55 Ian Abbott 2013-11-08 2382 goto done; af93da31634d6d55 Ian Abbott 2013-11-08 2383 } e36472145aa706c1 Ian Abbott 2019-06-25 2384 if (bm->dma_dir != DMA_NONE) { e36472145aa706c1 Ian Abbott 2019-06-25 2385 /* e36472145aa706c1 Ian Abbott 2019-06-25 2386 * DMA buffer was allocated as a single block. e36472145aa706c1 Ian Abbott 2019-06-25 2387 * Address is in page_list[0]. e36472145aa706c1 Ian Abbott 2019-06-25 2388 */ e36472145aa706c1 Ian Abbott 2019-06-25 2389 buf = &bm->page_list[0]; e36472145aa706c1 Ian Abbott 2019-06-25 2390 retval = dma_mmap_coherent(bm->dma_hw_dev, vma, buf->virt_addr, e36472145aa706c1 Ian Abbott 2019-06-25 2391 buf->dma_addr, n_pages * PAGE_SIZE); e36472145aa706c1 Ian Abbott 2019-06-25 2392 } else { ed9eccbe8970f6ee David Schleef 2008-11-04 2393 for (i = 0; i < n_pages; ++i) { e36472145aa706c1 Ian Abbott 2019-06-25 2394 unsigned long pfn; e36472145aa706c1 Ian Abbott 2019-06-25 2395 e36472145aa706c1 Ian Abbott 2019-06-25 2396 buf = &bm->page_list[i]; e36472145aa706c1 Ian Abbott 2019-06-25 2397 pfn = page_to_pfn(virt_to_page(buf->virt_addr)); e36472145aa706c1 Ian Abbott 2019-06-25 2398 retval = remap_pfn_range(vma, start, pfn, PAGE_SIZE, e36472145aa706c1 Ian Abbott 2019-06-25 @2399 PAGE_SHARED); e36472145aa706c1 Ian Abbott 2019-06-25 2400 if (retval) e36472145aa706c1 Ian Abbott 2019-06-25 2401 break; a52840a98bbb50a7 H Hartley Sweeten 2012-12-19 2402 ed9eccbe8970f6ee David Schleef 2008-11-04 2403 start += PAGE_SIZE; ed9eccbe8970f6ee David Schleef 2008-11-04 2404 } e36472145aa706c1 Ian Abbott 2019-06-25 2405 } ed9eccbe8970f6ee David Schleef 2008-11-04 2406 e36472145aa706c1 Ian Abbott 2019-06-25 2407 if (retval == 0) { ed9eccbe8970f6ee David Schleef 2008-11-04 2408 vma->vm_ops = &comedi_vm_ops; af93da31634d6d55 Ian Abbott 2013-11-08 2409 vma->vm_private_data = bm; ed9eccbe8970f6ee David Schleef 2008-11-04 2410 af93da31634d6d55 Ian Abbott 2013-11-08 2411 vma->vm_ops->open(vma); e36472145aa706c1 Ian Abbott 2019-06-25 2412 } ed9eccbe8970f6ee David Schleef 2008-11-04 2413 ed9eccbe8970f6ee David Schleef 2008-11-04 2414 done: b34aa86f12e8848b Ian Abbott 2014-04-10 2415 up_read(&dev->attach_lock); b34aa86f12e8848b Ian Abbott 2014-04-10 2416 comedi_buf_map_put(bm); /* put reference to buf map - okay if NULL */ ed9eccbe8970f6ee David Schleef 2008-11-04 2417 return retval; ed9eccbe8970f6ee David Schleef 2008-11-04 2418 } ed9eccbe8970f6ee David Schleef 2008-11-04 2419 :::::: The code at line 2399 was first introduced by commit :::::: e36472145aa706c186a6bb4f6419c613b0b1305c staging: comedi: use dma_mmap_coherent for DMA-able buffer mmap :::::: TO: Ian Abbott <abbotti@xxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
