Compile error on "error: call to ‘__compiletime_assert_581’ declared with attribute error: clamp() low limit dsc_min_bpc * 3 greater than high limit dsc_max_bpc * 3"

From: Zhuo, Qiuxu
Date: Thu Feb 06 2025 - 03:05:26 EST


Hi,

I got the compile error as below.
My GCC is: gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
kernel: v6.14-rc1

--- compile error log ---

CC drivers/gpu/drm/i915/display/intel_dp.o
In file included from <command-line>:0:0:
In function ‘intel_dp_dsc_compute_pipe_bpp_limits.isra.77’,
inlined from ‘intel_dp_compute_config_limits’ at drivers/gpu/drm/i915/display/intel_dp.c:2547:3:
././include/linux/compiler_types.h:542:38: error: call to ‘__compiletime_assert_581’ declared with attribute error: clamp() low limit dsc_min_bpc * 3 greater than high limit dsc_max_bpc * 3
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
././include/linux/compiler_types.h:523:4: note: in definition of macro ‘__compiletime_assert’
prefix ## suffix(); \
^~~~~~
././include/linux/compiler_types.h:542:2: note: in expansion of macro ‘_compiletime_assert’
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~~~~~~~~~~~~~~~
./include/linux/minmax.h:188:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \
^~~~~~~~~~~~~~~~
./include/linux/minmax.h:195:2: note: in expansion of macro ‘__clamp_once’
__clamp_once(type, val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_))
^~~~~~~~~~~~
./include/linux/minmax.h:206:28: note: in expansion of macro ‘__careful_clamp’
#define clamp(val, lo, hi) __careful_clamp(__auto_type, val, lo, hi)
^~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/intel_dp.c:2506:25: note: in expansion of macro ‘clamp’
limits->pipe.max_bpp = clamp(limits->pipe.max_bpp, dsc_min_bpc * 3, dsc_max_bpc * 3);
^~~~~
drivers/gpu/drm/xe/Makefile:165: recipe for target 'drivers/gpu/drm/xe/i915-display/intel_dp.o' failed