From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
arch/arc/ implements BUG_ON() with BUG(). ARC has its own BUG()
function and that function uses pr_warn() as part of its implementation.
Several (8) files in amd/powerplay/ #undef various pr_xyz() functions so
that they won't be used by these drivers, since dev_() functions are
preferred here and the #undefs make the pr_() functions unavailable.
Hence the following build errors are reported in ARC builds:
../drivers/gpu/drm/amd/amdgpu/../powerplay/navi10_ppt.c: In function 'navi10_fill_i2c_req':
../arch/arc/include/asm/bug.h:24:2: error: implicit declaration of function 'pr_warn'; did you mean 'drm_warn'? [-Werror=implicit-function-declaration]
../drivers/gpu/drm/amd/amdgpu/../powerplay/sienna_cichlid_ppt.c: In function 'sienna_cichlid_fill_i2c_req':
../arch/arc/include/asm/bug.h:24:2: error: implicit declaration of function 'pr_warn'; did you mean 'drm_warn'? [-Werror=implicit-function-declaration]
Fixes: 55084d7f4022 ("drm/amd/powerplay: forbid to use pr_err/warn/info/debug")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Evan Quan <evan.quan@xxxxxxx>
Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx
---
Another alternative is for amd/powerplay/ drivers not to use BUG()
or BUG_ON().
A third alternative is to ask the ARC developers to implement BUG()
without using any pr_() functions.
drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 2 +-
drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- lnx-59-rc7.orig/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ lnx-59-rc7/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -52,7 +52,7 @@
* They are more MGPU friendly.
*/
#undef pr_err
-#undef pr_warn
+//#undef pr_warn
#undef pr_info
#undef pr_debug
--- lnx-59-rc7.orig/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c
+++ lnx-59-rc7/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c
@@ -54,7 +54,7 @@
* They are more MGPU friendly.
*/
#undef pr_err
-#undef pr_warn
+//#undef pr_warn
#undef pr_info
#undef pr_debug
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