drm/i915: make REG_BIT() and REG_GENMASK() work with variables
REG_BIT() and REG_GENMASK() were intended to work with both constant expressions and otherwise, with the former having extra compile time checks for the bit ranges. Incredibly, the result of __builtin_constant_p() is not an integer constant expression when given a non-constant expression, leading to errors in BUILD_BUG_ON_ZERO(). Replace __builtin_constant_p() with the __is_constexpr() magic spell. Reported-by:Ville Syrjala <ville.syrjala@linux.intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190524185253.1088-1-jani.nikula@intel.com
parent
c2df2201
Please register or sign in to comment