On Tue, Jan 25, 2022 at 10:31:42AM -0800, Lucas De Marchi wrote:
Architectures other than x86 have a stub implementation calling pr_err() and WARN_ON_ONCE(). The appropriate headers need to be included, otherwise the header-test target will fail with:HDRTEST drivers/gpu/drm/i915/i915_mm.h In file included from <command-line>: ./drivers/gpu/drm/i915/i915_mm.h: In function ‘remap_io_mapping’: ./drivers/gpu/drm/i915/i915_mm.h:25:2: error: implicit declaration of function ‘pr_err’ [-Werror=implicit-function-declaration] 25 | pr_err("Architecture has no %s() and shouldn't be calling this function\n", __func__); | ^~~~~~
actually the pr_err() may be excessive spam to the log. Maybe just remove it together with the ones from drm_cache.c Lucas De Marchi
