linux-kernel - 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

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Message-ID: <CY8PR11MB7134D2D3BD641BE58310EF0189F62@CY8PR11MB7134.namprd11.prod.outlook.com>
Date: Thu, 6 Feb 2025 08:04:39 +0000
From: "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>
To: "jani.nikula@...ux.intel.com" <jani.nikula@...ux.intel.com>, "Vivi,
 Rodrigo" <rodrigo.vivi@...el.com>, "joonas.lahtinen@...ux.intel.com"
	<joonas.lahtinen@...ux.intel.com>, "tursulin@...ulin.net"
	<tursulin@...ulin.net>, "airlied@...il.com" <airlied@...il.com>,
	"simona@...ll.ch" <simona@...ll.ch>, "Nautiyal, Ankit K"
	<ankit.k.nautiyal@...el.com>
CC: "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
	"intel-xe@...ts.freedesktop.org" <intel-xe@...ts.freedesktop.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Zhuo, Qiuxu"
	<qiuxu.zhuo@...el.com>
Subject: 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"

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