Hi Dave,

I have a small fix to the following patch in the drm-fixes-mst branch to resolve a 32-bit compile error. I've attached the patch separately and also squashed it into the previous change.

Thanks, Jordan

commit 6d3d3d07381401ac6b89dfd429002c9d6ffda5e3 Author: Harry Wentland harry.wentland@amd.com Date: Fri Jan 22 17:07:25 2016 -0500

drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil

-----Original Message----- From: Wentland, Harry Sent: Thursday, February 04, 2016 11:40 AM To: Lazare, Jordan Subject: FW: [drm:drm-fixes-mst 5/9] include/drm/drm_fixed.h:159: undefined reference to `__aeabi_uldivmod'

-----Original Message----- From: kbuild test robot [mailto:fengguang.wu@intel.com] Sent: February 4, 2016 8:34 AM To: Wentland, Harry Harry.Wentland@amd.com Cc: kbuild-all@01.org; Dave Airlie airlied@redhat.com; Deucher, Alexander Alexander.Deucher@amd.com Subject: [drm:drm-fixes-mst 5/9] include/drm/drm_fixed.h:159: undefined reference to `__aeabi_uldivmod'

tree: git://people.freedesktop.org/~airlied/linux.git drm-fixes-mst head: 18ddcd63d22663841b8f61ee52733736bf3a4c7e commit: 275e06c063ea920c4b89ee293b1975080f887b00 [5/9] drm/dp/mst: Calculate MST PBN with 31.32 fixed point config: arm-exynos_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/ma... -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 275e06c063ea920c4b89ee293b1975080f887b00 # save the attached .config to linux build tree make.cross ARCH=arm

All errors (new ones prefixed by >>):

drivers/built-in.o: In function `drm_fixp_from_fraction':

...

include/drm/drm_fixed.h:159: undefined reference to `__aeabi_uldivmod'

include/drm/drm_fixed.h:160: undefined reference to `__aeabi_uldivmod'

vim +159 include/drm/drm_fixed.h

210a0b9e Alex Deucher 2013-03-22 143 if (shift > DRM_FIXED_POINT) 210a0b9e Alex Deucher 2013-03-22 144 return result >> (shift - DRM_FIXED_POINT); 210a0b9e Alex Deucher 2013-03-22 145 210a0b9e Alex Deucher 2013-03-22 146 return result; 210a0b9e Alex Deucher 2013-03-22 147 } 210a0b9e Alex Deucher 2013-03-22 148 6d3d3d07 Harry Wentland 2016-01-22 149 static inline s64 drm_fixp_from_fraction(s64 a, s64 b) 6d3d3d07 Harry Wentland 2016-01-22 150 { 6d3d3d07 Harry Wentland 2016-01-22 151 s64 res; 6d3d3d07 Harry Wentland 2016-01-22 152 bool a_neg = a < 0; 6d3d3d07 Harry Wentland 2016-01-22 153 bool b_neg = b < 0; 6d3d3d07 Harry Wentland 2016-01-22 154 u64 a_abs = a_neg ? -a : a; 6d3d3d07 Harry Wentland 2016-01-22 155 u64 b_abs = b_neg ? -b : b; 6d3d3d07 Harry Wentland 2016-01-22 156 u64 rem; 6d3d3d07 Harry Wentland 2016-01-22 157 6d3d3d07 Harry Wentland 2016-01-22 158 /* determine integer part */ 6d3d3d07 Harry Wentland 2016-01-22 @159 u64 res_abs = a_abs / b_abs; 6d3d3d07 Harry Wentland 2016-01-22 160 rem = a_abs % b_abs; 6d3d3d07 Harry Wentland 2016-01-22 161 6d3d3d07 Harry Wentland 2016-01-22 162 /* determine fractional part */ 6d3d3d07 Harry Wentland 2016-01-22 163 { 6d3d3d07 Harry Wentland 2016-01-22 164 u32 i = DRM_FIXED_POINT; 6d3d3d07 Harry Wentland 2016-01-22 165 6d3d3d07 Harry Wentland 2016-01-22 166 do { 6d3d3d07 Harry Wentland 2016-01-22 167 rem <<= 1;

:::::: The code at line 159 was first introduced by commit :::::: 6d3d3d07381401ac6b89dfd429002c9d6ffda5e3 drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil

:::::: TO: Harry Wentland harry.wentland@amd.com :::::: CC: Dave Airlie airlied@redhat.com

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