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Message-ID: <202602070500.zo0DrH6U-lkp@intel.com>
Date: Sat, 7 Feb 2026 05:58:31 +0800
From: kernel test robot <lkp@...el.com>
To: Matt Coster <matt.coster@...tec.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Frank Binns <frank.binns@...tec.com>,
Brajesh Gupta <brajesh.gupta@...tec.com>,
Alessio Belle <alessio.belle@...tec.com>,
Alexandru Dadu <alexandru.dadu@...tec.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Matt Coster <matt.coster@...tec.com>
Subject: Re: [PATCH 1/2] drm/imagination: Define packed BVNCs in the uapi
Hi Matt,
kernel test robot noticed the following build errors:
[auto build test ERROR on 55473b60178060a4fdb4631bd0c91879cc7d18d8]
url: https://github.com/intel-lab-lkp/linux/commits/Matt-Coster/drm-imagination-Define-packed-BVNCs-in-the-uapi/20260206-175844
base: 55473b60178060a4fdb4631bd0c91879cc7d18d8
patch link: https://lore.kernel.org/r/20260206-bvnc-cleanup-v1-1-f3c818541fbe%40imgtec.com
patch subject: [PATCH 1/2] drm/imagination: Define packed BVNCs in the uapi
config: riscv-randconfig-001-20260206 (https://download.01.org/0day-ci/archive/20260207/202602070500.zo0DrH6U-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260207/202602070500.zo0DrH6U-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602070500.zo0DrH6U-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/gpu/drm/imagination/pvr_device.c:550:7: error: expression is not an integer constant expression
550 | case PVR_PACKED_BVNC(33, 15, 11, 3):
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.h:490:2: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
491 | FIELD_PREP(DRM_PVR_BVNC_V, v) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
492 | FIELD_PREP(DRM_PVR_BVNC_N, n) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
493 | FIELD_PREP(DRM_PVR_BVNC_C, c))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.c:550:7: note: this use of statement expressions is not supported in a constant expression
drivers/gpu/drm/imagination/pvr_device.h:490:3: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^
include/linux/bitfield.h:137:3: note: expanded from macro 'FIELD_PREP'
137 | __FIELD_PREP(_mask, _val, "FIELD_PREP: "); \
| ^
include/linux/bitfield.h:90:3: note: expanded from macro '__FIELD_PREP'
90 | __BF_FIELD_CHECK_MASK(mask, val, pfx); \
| ^
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:631:2: note: expanded from macro 'compiletime_assert'
631 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:619:2: note: expanded from macro '_compiletime_assert'
619 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:603:2: note: expanded from macro '__compiletime_assert'
603 | do { \
| ^
drivers/gpu/drm/imagination/pvr_device.c:551:7: error: expression is not an integer constant expression
551 | case PVR_PACKED_BVNC(36, 53, 104, 796):
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.h:490:2: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
491 | FIELD_PREP(DRM_PVR_BVNC_V, v) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
492 | FIELD_PREP(DRM_PVR_BVNC_N, n) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
493 | FIELD_PREP(DRM_PVR_BVNC_C, c))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.c:551:7: note: this use of statement expressions is not supported in a constant expression
drivers/gpu/drm/imagination/pvr_device.h:490:3: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^
include/linux/bitfield.h:137:3: note: expanded from macro 'FIELD_PREP'
137 | __FIELD_PREP(_mask, _val, "FIELD_PREP: "); \
| ^
include/linux/bitfield.h:90:3: note: expanded from macro '__FIELD_PREP'
90 | __BF_FIELD_CHECK_MASK(mask, val, pfx); \
| ^
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:631:2: note: expanded from macro 'compiletime_assert'
631 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:619:2: note: expanded from macro '_compiletime_assert'
619 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:603:2: note: expanded from macro '__compiletime_assert'
603 | do { \
| ^
drivers/gpu/drm/imagination/pvr_device.c:554:7: error: expression is not an integer constant expression
554 | case PVR_PACKED_BVNC(36, 52, 104, 182):
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.h:490:2: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
491 | FIELD_PREP(DRM_PVR_BVNC_V, v) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
492 | FIELD_PREP(DRM_PVR_BVNC_N, n) | \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
493 | FIELD_PREP(DRM_PVR_BVNC_C, c))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/imagination/pvr_device.c:554:7: note: this use of statement expressions is not supported in a constant expression
drivers/gpu/drm/imagination/pvr_device.h:490:3: note: expanded from macro 'PVR_PACKED_BVNC'
490 | (FIELD_PREP(DRM_PVR_BVNC_B, b) | \
| ^
include/linux/bitfield.h:137:3: note: expanded from macro 'FIELD_PREP'
137 | __FIELD_PREP(_mask, _val, "FIELD_PREP: "); \
| ^
include/linux/bitfield.h:90:3: note: expanded from macro '__FIELD_PREP'
90 | __BF_FIELD_CHECK_MASK(mask, val, pfx); \
| ^
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:631:2: note: expanded from macro 'compiletime_assert'
631 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:619:2: note: expanded from macro '_compiletime_assert'
619 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:603:2: note: expanded from macro '__compiletime_assert'
603 | do { \
| ^
3 errors generated.
vim +550 drivers/gpu/drm/imagination/pvr_device.c
1c21f240fbc1e47 Matt Coster 2026-01-13 545
1c21f240fbc1e47 Matt Coster 2026-01-13 546 static enum pvr_gpu_support_level
1c21f240fbc1e47 Matt Coster 2026-01-13 547 pvr_gpu_support_level(const struct pvr_gpu_id *gpu_id)
1c21f240fbc1e47 Matt Coster 2026-01-13 548 {
1c21f240fbc1e47 Matt Coster 2026-01-13 549 switch (pvr_gpu_id_to_packed_bvnc(gpu_id)) {
1c21f240fbc1e47 Matt Coster 2026-01-13 @550 case PVR_PACKED_BVNC(33, 15, 11, 3):
1c21f240fbc1e47 Matt Coster 2026-01-13 551 case PVR_PACKED_BVNC(36, 53, 104, 796):
1c21f240fbc1e47 Matt Coster 2026-01-13 552 return PVR_GPU_SUPPORTED;
1c21f240fbc1e47 Matt Coster 2026-01-13 553
1c21f240fbc1e47 Matt Coster 2026-01-13 554 case PVR_PACKED_BVNC(36, 52, 104, 182):
1c21f240fbc1e47 Matt Coster 2026-01-13 555 return PVR_GPU_EXPERIMENTAL;
1c21f240fbc1e47 Matt Coster 2026-01-13 556
1c21f240fbc1e47 Matt Coster 2026-01-13 557 default:
1c21f240fbc1e47 Matt Coster 2026-01-13 558 return PVR_GPU_UNKNOWN;
1c21f240fbc1e47 Matt Coster 2026-01-13 559 }
1c21f240fbc1e47 Matt Coster 2026-01-13 560 }
1c21f240fbc1e47 Matt Coster 2026-01-13 561
--
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