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: <Z6UcMPGQ7HiwHEPj@intel.com>
Date: Thu, 6 Feb 2025 15:31:44 -0500
From: Rodrigo Vivi <rodrigo.vivi@...el.com>
To: "Nautiyal, Ankit K" <ankit.k.nautiyal@...el.com>
CC: "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>, "jani.nikula@...ux.intel.com"
	<jani.nikula@...ux.intel.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>, "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 Thu, Feb 06, 2025 at 09:43:54PM +0530, Nautiyal, Ankit K wrote:
> 
> 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

Which is queued to be in 6.14-rc2

> 
> 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
> >