tree: git://people.freedesktop.org/~agd5f/linux.git vega20_psp_smu head: 9b9ef18df4349dd2d2b8941e76c032ed8acf2529 commit: 27480799ed68e17e8228372a4afac7d5dcfbf01a [28/44] drm/amd/powerplay: new interfaces for overdrive vega20 sclk and mclk config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 27480799ed68e17e8228372a4afac7d5dcfbf01a # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm

All warnings (new ones prefixed by >>):

In file included from arch/arm/include/asm/div64.h:127:0, from include/linux/kernel.h:174, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c: In function 'vega20_set_sclk_od': include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^

...

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'

do_div(od_sclk, 100); ^~~~~~ In file included from include/linux/kernel.h:10:0, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow] } else if (likely(((n) >> 32) == 0)) { \ ^ include/linux/compiler.h:76:40: note: in definition of macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^

...

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'

do_div(od_sclk, 100); ^~~~~~ In file included from arch/arm/include/asm/div64.h:127:0, from include/linux/kernel.h:174, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types] __rem = __div64_32(&(n), __base); \ ^

...

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1200:2: note: in expansion of macro 'do_div'

do_div(od_sclk, 100); ^~~~~~ In file included from include/linux/kernel.h:174:0, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: arch/arm/include/asm/div64.h:33:24: note: expected 'uint64_t * {aka long long unsigned int *}' but argument is of type 'uint32_t * {aka unsigned int *}' static inline uint32_t __div64_32(uint64_t *n, uint32_t base) ^~~~~~~~~~ In file included from arch/arm/include/asm/div64.h:127:0, from include/linux/kernel.h:174, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c: In function 'vega20_set_mclk_od': include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div' do_div(od_mclk, 100); ^~~~~~ In file included from include/linux/kernel.h:10:0, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow] } else if (likely(((n) >> 32) == 0)) { \ ^ include/linux/compiler.h:76:40: note: in definition of macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div' do_div(od_mclk, 100); ^~~~~~ In file included from arch/arm/include/asm/div64.h:127:0, from include/linux/kernel.h:174, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types] __rem = __div64_32(&(n), __base); \ ^ drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:1247:2: note: in expansion of macro 'do_div' do_div(od_mclk, 100); ^~~~~~ In file included from include/linux/kernel.h:174:0, from include/linux/delay.h:22, from drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c:24: arch/arm/include/asm/div64.h:33:24: note: expected 'uint64_t * {aka long long unsigned int *}' but argument is of type 'uint32_t * {aka unsigned int *}' static inline uint32_t __div64_32(uint64_t *n, uint32_t base) ^~~~~~~~~~ cc1: some warnings being treated as errors

vim +/do_div +1200 drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/vega20_hwmgr.c

1187 1188 static int vega20_set_sclk_od( 1189 struct pp_hwmgr *hwmgr, uint32_t value) 1190 { 1191 struct vega20_hwmgr *data = hwmgr->backend; 1192 struct vega20_single_dpm_table *sclk_table = 1193 &(data->dpm_table.gfx_table); 1194 struct vega20_single_dpm_table *golden_sclk_table = 1195 &(data->golden_dpm_table.gfx_table); 1196 uint32_t od_sclk; 1197 int ret = 0; 1198 1199 od_sclk = golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value * value;

1200 do_div(od_sclk, 100);

1201 od_sclk += golden_sclk_table->dpm_levels[golden_sclk_table->count - 1].value; 1202 1203 ret = vega20_od8_set_settings(hwmgr, OD8_SETTING_GFXCLK_FMAX, od_sclk); 1204 PP_ASSERT_WITH_CODE(!ret, 1205 "[SetSclkOD] failed to set od gfxclk!", 1206 return ret); 1207 1208 /* refresh gfxclk table */ 1209 ret = vega20_setup_single_dpm_table(hwmgr, sclk_table, PPCLK_GFXCLK); 1210 PP_ASSERT_WITH_CODE(!ret, 1211 "[SetSclkOD] failed to refresh gfxclk table!", 1212 return ret); 1213 1214 return 0; 1215 } 1216

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