Hi Neal, I love your patch! Perhaps something to improve: [auto build test WARNING on usb/usb-testing] [also build test WARNING on robh/for-next balbi-usb/testing/next v5.18-rc7 next-20220513] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Neal-Liu/add-Aspeed-udc-driver-for-ast2600/20220513-150314 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: sparc-randconfig-s031-20220516 (https://download.01.org/0day-ci/archive/20220516/202205161842.gsOJeWvM-lkp@xxxxxxxxx/config) compiler: sparc-linux-gcc (GCC) 11.3.0 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-dirty # https://github.com/intel-lab-lkp/linux/commit/272ae26f9fe89f60d584cf445431d0fa566eb24b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Neal-Liu/add-Aspeed-udc-driver-for-ast2600/20220513-150314 git checkout 272ae26f9fe89f60d584cf445431d0fa566eb24b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc SHELL=/bin/bash drivers/usb/gadget/udc/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/usb/gadget/udc/aspeed_udc.c:1009:34: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/gadget/udc/aspeed_udc.c:1037:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const volatile [noderef] __iomem *src @@ got struct usb_ctrlrequest *creq @@ drivers/usb/gadget/udc/aspeed_udc.c:1037:9: sparse: expected void const volatile [noderef] __iomem *src drivers/usb/gadget/udc/aspeed_udc.c:1037:9: sparse: got struct usb_ctrlrequest *creq >> drivers/usb/gadget/udc/aspeed_udc.c:1066:25: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le16 [addressable] [usertype] wValue @@ drivers/usb/gadget/udc/aspeed_udc.c:1066:25: sparse: expected unsigned int [usertype] value drivers/usb/gadget/udc/aspeed_udc.c:1066:25: sparse: got restricted __le16 [addressable] [usertype] wValue drivers/usb/gadget/udc/aspeed_udc.c:1070:37: sparse: sparse: restricted __le16 degrades to integer drivers/usb/gadget/udc/aspeed_udc.c:1075:37: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/gadget/udc/aspeed_udc.c:1518:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct usb_ctrlrequest *creq @@ got void [noderef] __iomem * @@ drivers/usb/gadget/udc/aspeed_udc.c:1518:19: sparse: expected struct usb_ctrlrequest *creq drivers/usb/gadget/udc/aspeed_udc.c:1518:19: sparse: got void [noderef] __iomem * >> drivers/usb/gadget/udc/aspeed_udc.c:619:38: sparse: sparse: cast truncates bits from constant value (80 becomes 0) drivers/usb/gadget/udc/aspeed_udc.c:625:12: sparse: sparse: context imbalance in 'ast_udc_ep_queue' - different lock contexts for basic block vim +1009 drivers/usb/gadget/udc/aspeed_udc.c 994 995 static void ast_udc_getstatus(struct ast_udc_dev *udc) 996 { 997 struct ast_udc_ep *ep; 998 u16 status = 0; 999 int epnum; 1000 1001 switch (udc->creq->bRequestType & USB_RECIP_MASK) { 1002 case USB_RECIP_DEVICE: 1003 /* Get device status */ 1004 status = 1 << USB_DEVICE_SELF_POWERED; 1005 break; 1006 case USB_RECIP_INTERFACE: 1007 break; 1008 case USB_RECIP_ENDPOINT: > 1009 epnum = udc->creq->wIndex & USB_ENDPOINT_NUMBER_MASK; 1010 status = udc->ep[epnum].stopped; 1011 break; 1012 default: 1013 goto stall; 1014 } 1015 1016 ep = &udc->ep[epnum]; 1017 EP_DBG(ep, "status: 0x%x\n", status); 1018 ast_udc_ep0_data_tx(udc, (u8 *)&status, sizeof(status)); 1019 1020 return; 1021 1022 stall: 1023 EP_DBG(ep, "Can't respond request\n"); 1024 ast_udc_write(udc, ast_udc_read(udc, AST_UDC_EP0_CTRL) | EP0_STALL, 1025 AST_UDC_EP0_CTRL); 1026 } 1027 1028 static void ast_udc_ep0_handle_setup(struct ast_udc_dev *udc) 1029 { 1030 struct ast_udc_ep *ep = &udc->ep[0]; 1031 struct ast_udc_request *req; 1032 struct usb_ctrlrequest crq; 1033 int req_num = 0; 1034 u16 ep_num = 0; 1035 int rc; 1036 > 1037 memcpy_fromio(&crq, udc->creq, sizeof(crq)); 1038 1039 SETUP_DBG(udc, "SETEUP packet: %02x/%02x/%04x/%04x/%04x\n", 1040 crq.bRequestType, crq.bRequest, le16_to_cpu(crq.wValue), 1041 le16_to_cpu(crq.wIndex), le16_to_cpu(crq.wLength)); 1042 1043 /* 1044 * Cleanup ep0 request(s) in queue because 1045 * there is a new control setup comes. 1046 */ 1047 list_for_each_entry(req, &udc->ep[0].queue, queue) { 1048 req_num++; 1049 EP_DBG(ep, "there is req %p in ep0 queue !\n", req); 1050 } 1051 1052 if (req_num) 1053 ast_udc_nuke(&udc->ep[0], -ETIMEDOUT); 1054 1055 udc->ep[0].dir_in = crq.bRequestType & USB_DIR_IN; 1056 1057 if ((crq.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 1058 switch (crq.bRequest) { 1059 case USB_REQ_SET_ADDRESS: 1060 if (ast_udc_read(udc, AST_UDC_STS) & UDC_STS_HIGHSPEED) 1061 udc->gadget.speed = USB_SPEED_HIGH; 1062 else 1063 udc->gadget.speed = USB_SPEED_FULL; 1064 1065 SETUP_DBG(udc, "set addr: 0x%x\n", crq.wValue); > 1066 ast_udc_write(udc, crq.wValue, AST_UDC_CONFIG); 1067 goto req_complete; 1068 1069 case USB_REQ_CLEAR_FEATURE: 1070 ep_num = crq.wIndex & USB_ENDPOINT_NUMBER_MASK; 1071 SETUP_DBG(udc, "ep%d: CLEAR FEATURE\n", ep_num); 1072 goto req_driver; 1073 1074 case USB_REQ_SET_FEATURE: 1075 ep_num = crq.wIndex & USB_ENDPOINT_NUMBER_MASK; 1076 SETUP_DBG(udc, "ep%d: SET FEATURE\n", ep_num); 1077 goto req_driver; 1078 1079 case USB_REQ_GET_STATUS: 1080 ast_udc_getstatus(udc); 1081 return; 1082 1083 default: 1084 goto req_driver; 1085 } 1086 1087 } 1088 1089 req_driver: 1090 if (udc->driver) { 1091 SETUP_DBG(udc, "Forwarding %s to gadget...\n", 1092 udc->gadget.name); 1093 1094 spin_unlock(&udc->lock); 1095 rc = udc->driver->setup(&udc->gadget, &crq); 1096 spin_lock(&udc->lock); 1097 1098 } else 1099 SETUP_DBG(udc, "No gadget for request !\n"); 1100 1101 if (rc >= 0) 1102 return; 1103 1104 /* Stall if gadget failed */ 1105 SETUP_DBG(udc, "Stalling, rc:0x%x\n", rc); 1106 ast_udc_write(udc, ast_udc_read(udc, AST_UDC_EP0_CTRL) | EP0_STALL, 1107 AST_UDC_EP0_CTRL); 1108 return; 1109 1110 req_complete: 1111 SETUP_DBG(udc, "ep%d: Sending IN status without data\n", ep_num); 1112 ast_udc_write(udc, EP0_TX_BUFF_RDY, AST_UDC_EP0_CTRL); 1113 } 1114 -- 0-DAY CI Kernel Test Service https://01.org/lkp
