linux-kernel - Re: 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: <01316a42-bcc0-4255-8750-3c5e8329161f@intel.com>
Date: Thu, 6 Feb 2025 21:43:54 +0530
From: "Nautiyal, Ankit K" <ankit.k.nautiyal@...el.com>
To: "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>, "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>
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>
Subject: Re: 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"


On 2/6/2025 1:34 PM, Zhuo, Qiuxu wrote:
> 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

Hi Qiuxu,

Thanks for the mail.

Fix was sent and merged in drm-intel-next : 
https://cgit.freedesktop.org/drm/drm-intel/commit/?h=drm-intel-next&id=a67221b5eb8d59fb7e1f0df3ef9945b6a0f32cca

Regards,

Ankit


>
> --- 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
>