tree: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next head: a65a1ec70639afa5ff7990cf33213dd41f3c7176 commit: edecc785996030331a83dddaeee960ab9302c608 [69/89] usb: dwc3: Add support for DWC_usb32 IP config: i386-randconfig-a002-20200520 (attached as .config) compiler: gcc-6 (Debian 6.3.0-18+deb9u1) 6.3.0 20170516 reproduce: git checkout edecc785996030331a83dddaeee960ab9302c608 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/err.h:5:0, from include/linux/clk.h:12, from drivers/usb/dwc3/core.c:11: drivers/usb/dwc3/core.c: In function 'dwc3_core_soft_reset': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~ drivers/usb/dwc3/core.c:292:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~ drivers/usb/dwc3/core.c:292:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' (cond) ? ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~ if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~ drivers/usb/dwc3/core.c:292:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.c: In function 'dwc3_phy_setup': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/dwc3/core.c:588:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:588:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/dwc3/core.c:588:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:588:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' (cond) ? ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~ drivers/usb/dwc3/core.c:588:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:588:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/dwc3/core.c:679:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:679:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/dwc3/core.c:679:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:679:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' (cond) ? ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~ drivers/usb/dwc3/core.c:679:2: note: in expansion of macro 'if' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~ drivers/usb/dwc3/core.c:679:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.c: In function 'dwc3_core_init': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/dwc3/core.c:962:2: note: in expansion of macro 'if' if (hw_mode == DWC3_GHWPARAMS0_MODE_DRD && ^~ drivers/usb/dwc3/core.c:963:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' !DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) { ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ -- In file included from include/linux/ioport.h:13:0, from include/linux/acpi.h:12, from drivers/usb/dwc3/host.c:10: drivers/usb/dwc3/host.c: In function 'dwc3_host_init': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~ drivers/usb/dwc3/host.c:107:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~ drivers/usb/dwc3/host.c:107:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] dwc->revision >= _ip##_REVISION_##_from && ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' (cond) ? ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~ if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~ drivers/usb/dwc3/host.c:107:6: note: in expansion of macro 'DWC3_VER_IS_WITHIN' if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) ^~~~~~~~~~~~~~~~~~ vim +/if +292 drivers/usb/dwc3/core.c 226 227 /** 228 * dwc3_core_soft_reset - Issues core soft reset and PHY reset 229 * @dwc: pointer to our context structure 230 */ 231 static int dwc3_core_soft_reset(struct dwc3 *dwc) 232 { 233 u32 reg; 234 int retries = 1000; 235 int ret; 236 237 usb_phy_init(dwc->usb2_phy); 238 usb_phy_init(dwc->usb3_phy); 239 ret = phy_init(dwc->usb2_generic_phy); 240 if (ret < 0) 241 return ret; 242 243 ret = phy_init(dwc->usb3_generic_phy); 244 if (ret < 0) { 245 phy_exit(dwc->usb2_generic_phy); 246 return ret; 247 } 248 249 /* 250 * We're resetting only the device side because, if we're in host mode, 251 * XHCI driver will reset the host block. If dwc3 was configured for 252 * host-only mode, then we can return early. 253 */ 254 if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST) 255 return 0; 256 257 reg = dwc3_readl(dwc->regs, DWC3_DCTL); 258 reg |= DWC3_DCTL_CSFTRST; 259 dwc3_writel(dwc->regs, DWC3_DCTL, reg); 260 261 /* 262 * For DWC_usb31 controller 1.90a and later, the DCTL.CSFRST bit 263 * is cleared only after all the clocks are synchronized. This can 264 * take a little more than 50ms. Set the polling rate at 20ms 265 * for 10 times instead. 266 */ 267 if (DWC3_VER_IS_WITHIN(DWC31, 190A, ANY) || DWC3_IP_IS(DWC32)) 268 retries = 10; 269 270 do { 271 reg = dwc3_readl(dwc->regs, DWC3_DCTL); 272 if (!(reg & DWC3_DCTL_CSFTRST)) 273 goto done; 274 275 if (DWC3_VER_IS_WITHIN(DWC31, 190A, ANY) || DWC3_IP_IS(DWC32)) 276 msleep(20); 277 else 278 udelay(1); 279 } while (--retries); 280 281 phy_exit(dwc->usb3_generic_phy); 282 phy_exit(dwc->usb2_generic_phy); 283 284 return -ETIMEDOUT; 285 286 done: 287 /* 288 * For DWC_usb31 controller 1.80a and prior, once DCTL.CSFRST bit 289 * is cleared, we must wait at least 50ms before accessing the PHY 290 * domain (synchronization delay). 291 */ 293 msleep(50); 294 295 return 0; 296 } 297 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org