Hi Julian, Thank you for the patch! Yet something to improve: [auto build test ERROR on linuxtv-media/master] [also build test ERROR on v5.7-rc2 next-20200421] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Julian-Meyer/media-uvcvideo-read-bulk-URBs-after-maxPayloadSize/20200421-225554 base: git://linuxtv.org/media_tree.git master config: arm-davinci_all_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): drivers/media/usb/uvc/uvc_video.c: In function 'uvc_video_decode_bulk': >> drivers/media/usb/uvc/uvc_video.c:1484:3: error: expected expression before '}' token 1484 | } | ^ >> drivers/media/usb/uvc/uvc_video.c:1484:3: warning: 'return' with a value, in function returning void [-Wreturn-type] drivers/media/usb/uvc/uvc_video.c:1458:13: note: declared here 1458 | static void uvc_video_decode_bulk(struct uvc_urb *uvc_urb, | ^~~~~~~~~~~~~~~~~~~~~ vim +1484 drivers/media/usb/uvc/uvc_video.c 1457 1458 static void uvc_video_decode_bulk(struct uvc_urb *uvc_urb, 1459 struct uvc_buffer *buf, struct uvc_buffer *meta_buf) 1460 { 1461 struct urb *urb = uvc_urb->urb; 1462 struct uvc_streaming *stream = uvc_urb->stream; 1463 u8 *mem; 1464 int len; 1465 int len_processed; 1466 1467 /* 1468 * Ignore ZLPs if they're not part of a frame, otherwise process them 1469 * to trigger the end of payload detection. 1470 */ 1471 if (urb->actual_length == 0 && stream->bulk.header_size == 0) 1472 return; 1473 1474 mem = urb->transfer_buffer; 1475 len = urb->actual_length; 1476 1477 while (len > 0) { 1478 len_processed = uvc_video_decode_bulk_single(stream, buf, 1479 meta_buf, uvc_urb, &mem, &len); 1480 1481 // if we don't process anything, we break out of the decode loop 1482 if (len_processed == 0) { 1483 return > 1484 } 1485 } 1486 } 1487 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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