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As part of this series, I have prepared two patches, one that introduces BARs names to use in code instead of numbers, and another that adds function to validate BARs before use. This is an evolution of the concept I presented in the patch: https://patchwork.freedesktop.org/patch/470184/?series=99094 The main difference between the original patch and what I have prepared here is that previously I checked all BARs at the beginning of i915 initialization, and now I only check BAR 0 at beginning. This is due to the fact that I have noticed that it can happen that only BAR 0 is available (I have observed this in the case of virtualization, on some platforms). Therefore, at the beginning, let's verify only BAR 0, and the others only before the first use. Signed-off-by: Piotr Piórkowski Cc: Jani Nikula Cc: Lucas De Marchi Cc: Matt Roper Piotr Piórkowski (2): drm/i915: Use of BARs names instead of numbers drm/i915: Sanitycheck PCI BARs .../gpu/drm/i915/display/intel_lpe_audio.c | 5 ++-- drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 11 +++++--- drivers/gpu/drm/i915/gt/intel_ggtt.c | 16 +++++++++--- drivers/gpu/drm/i915/gt/intel_gt.c | 3 ++- drivers/gpu/drm/i915/gt/intel_region_lmem.c | 17 +++++++------ drivers/gpu/drm/i915/gvt/cfg_space.c | 4 +-- drivers/gpu/drm/i915/i915_pci.c | 25 +++++++++++++++++++ drivers/gpu/drm/i915/i915_pci.h | 4 +++ drivers/gpu/drm/i915/intel_pci_config.h | 7 ++++++ 9 files changed, 73 insertions(+), 19 deletions(-)