Hi Piyush, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-linus head: a6aedb58a887aa2ea142ee914ff4030d019584bf commit: 8cb339f1c1f04baede9d54c1e40ac96247a6393b [33/42] usb: gadget: udc-xilinx: replace memcpy with memcpy_toio config: arm-randconfig-s033-20220901 (https://download.01.org/0day-ci/archive/20220902/202209020044.CX2PfZzM-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?id=8cb339f1c1f04baede9d54c1e40ac96247a6393b git remote add usb https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git git fetch --no-tags usb usb-linus git checkout 8cb339f1c1f04baede9d54c1e40ac96247a6393b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash drivers/usb/gadget/udc/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/usb/gadget/udc/udc-xilinx.c:502:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned int [usertype] *[assigned] eprambase @@ drivers/usb/gadget/udc/udc-xilinx.c:502:25: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:502:25: sparse: got unsigned int [usertype] *[assigned] eprambase >> drivers/usb/gadget/udc/udc-xilinx.c:506:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned char [usertype] *bufferptr @@ drivers/usb/gadget/udc/udc-xilinx.c:506:25: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:506:25: sparse: got unsigned char [usertype] *bufferptr drivers/usb/gadget/udc/udc-xilinx.c:520:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned int [usertype] *[assigned] eprambase @@ drivers/usb/gadget/udc/udc-xilinx.c:520:25: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:520:25: sparse: got unsigned int [usertype] *[assigned] eprambase drivers/usb/gadget/udc/udc-xilinx.c:524:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned char [usertype] *bufferptr @@ drivers/usb/gadget/udc/udc-xilinx.c:524:25: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:524:25: sparse: got unsigned char [usertype] *bufferptr >> drivers/usb/gadget/udc/udc-xilinx.c:1026:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned char [usertype] *[assigned] corebuf @@ drivers/usb/gadget/udc/udc-xilinx.c:1026:17: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:1026:17: sparse: got unsigned char [usertype] *[assigned] corebuf drivers/usb/gadget/udc/udc-xilinx.c:1620:35: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1626:31: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1641:34: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __le16 [usertype] @@ drivers/usb/gadget/udc/udc-xilinx.c:1641:34: sparse: expected unsigned short [usertype] drivers/usb/gadget/udc/udc-xilinx.c:1641:34: sparse: got restricted __le16 [usertype] drivers/usb/gadget/udc/udc-xilinx.c:1669:35: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1669:35: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1689:46: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1695:46: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/gadget/udc/udc-xilinx.c:1755:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got struct usb_ctrlrequest * @@ drivers/usb/gadget/udc/udc-xilinx.c:1755:9: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:1755:9: sparse: got struct usb_ctrlrequest * drivers/usb/gadget/udc/udc-xilinx.c:1758:29: sparse: sparse: cast from restricted __le16 drivers/usb/gadget/udc/udc-xilinx.c:1759:29: sparse: sparse: cast from restricted __le16 drivers/usb/gadget/udc/udc-xilinx.c:1760:30: sparse: sparse: cast from restricted __le16 >> drivers/usb/gadget/udc/udc-xilinx.c:1842:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got void *[assigned] buffer @@ drivers/usb/gadget/udc/udc-xilinx.c:1842:17: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:1842:17: sparse: got void *[assigned] buffer drivers/usb/gadget/udc/udc-xilinx.c:1872:34: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/udc-xilinx.c:1883:49: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned int [usertype] @@ got restricted __le16 [usertype] wValue @@ drivers/usb/gadget/udc/udc-xilinx.c:1883:49: sparse: expected unsigned int [usertype] drivers/usb/gadget/udc/udc-xilinx.c:1883:49: sparse: got restricted __le16 [usertype] wValue drivers/usb/gadget/udc/udc-xilinx.c:1888:47: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/gadget/udc/udc-xilinx.c:1918:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got unsigned char [usertype] *[assigned] ep0rambase @@ drivers/usb/gadget/udc/udc-xilinx.c:1918:25: sparse: expected void volatile [noderef] __iomem *to drivers/usb/gadget/udc/udc-xilinx.c:1918:25: sparse: got unsigned char [usertype] *[assigned] ep0rambase vim +502 drivers/usb/gadget/udc/udc-xilinx.c 468 469 /** 470 * xudc_eptxrx - Transmits or receives data to or from an endpoint. 471 * @ep: pointer to the usb endpoint configuration structure. 472 * @req: pointer to the usb request structure. 473 * @bufferptr: pointer to buffer containing the data to be sent. 474 * @bufferlen: The number of data bytes to be sent. 475 * 476 * Return: 0 on success, -EAGAIN if no buffer is free. 477 * 478 * This function copies the transmit/receive data to/from the end point buffer 479 * and enables the buffer for transmission/reception. 480 */ 481 static int xudc_eptxrx(struct xusb_ep *ep, struct xusb_req *req, 482 u8 *bufferptr, u32 bufferlen) 483 { 484 u32 *eprambase; 485 u32 bytestosend; 486 int rc = 0; 487 struct xusb_udc *udc = ep->udc; 488 489 bytestosend = bufferlen; 490 if (udc->dma_enabled) { 491 if (ep->is_in) 492 rc = xudc_dma_send(ep, req, bufferptr, bufferlen); 493 else 494 rc = xudc_dma_receive(ep, req, bufferptr, bufferlen); 495 return rc; 496 } 497 /* Put the transmit buffer into the correct ping-pong buffer.*/ 498 if (!ep->curbufnum && !ep->buffer0ready) { 499 /* Get the Buffer address and copy the transmit data.*/ 500 eprambase = (u32 __force *)(udc->addr + ep->rambase); 501 if (ep->is_in) { > 502 memcpy_toio(eprambase, bufferptr, bytestosend); 503 udc->write_fn(udc->addr, ep->offset + 504 XUSB_EP_BUF0COUNT_OFFSET, bufferlen); 505 } else { > 506 memcpy_toio(bufferptr, eprambase, bytestosend); 507 } 508 /* 509 * Enable the buffer for transmission. 510 */ 511 udc->write_fn(udc->addr, XUSB_BUFFREADY_OFFSET, 512 1 << ep->epnumber); 513 ep->buffer0ready = 1; 514 ep->curbufnum = 1; 515 } else if (ep->curbufnum && !ep->buffer1ready) { 516 /* Get the Buffer address and copy the transmit data.*/ 517 eprambase = (u32 __force *)(udc->addr + ep->rambase + 518 ep->ep_usb.maxpacket); 519 if (ep->is_in) { 520 memcpy_toio(eprambase, bufferptr, bytestosend); 521 udc->write_fn(udc->addr, ep->offset + 522 XUSB_EP_BUF1COUNT_OFFSET, bufferlen); 523 } else { 524 memcpy_toio(bufferptr, eprambase, bytestosend); 525 } 526 /* 527 * Enable the buffer for transmission. 528 */ 529 udc->write_fn(udc->addr, XUSB_BUFFREADY_OFFSET, 530 1 << (ep->epnumber + XUSB_STATUS_EP_BUFF2_SHIFT)); 531 ep->buffer1ready = 1; 532 ep->curbufnum = 0; 533 } else { 534 /* None of the ping-pong buffers are ready currently */ 535 return -EAGAIN; 536 } 537 return rc; 538 } 539 -- 0-DAY CI Kernel Test Service https://01.org/lkp
