From: Matt Roper matthew.d.roper@intel.com
commit 1acb34e7dd7720a1fff00cbd4d000ec3219dc9d6 upstream.
The intent of the version check in the mmap ioctl was to maintain support for existing platforms (i.e., ADL/RPL and earlier), but drop support on all future igpu platforms. As we've seen on the dgpu side, the hardware teams are using a more fine-grained numbering system for IP version numbers these days, so it's possible the version number associated with our next igpu could be some form of "12.xx" rather than 13 or higher. Comparing against the full ver.release number will ensure the intent of the check is maintained no matter what numbering the hardware teams settle on.
Fixes: d3f3baa3562a ("drm/i915: Reinstate the mmap ioctl for some platforms") Cc: Thomas Hellström thomas.hellstrom@linux.intel.com Cc: Lucas De Marchi lucas.demarchi@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com Reviewed-by: Lucas De Marchi lucas.demarchi@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20220407161839.1073443-1-matth... (cherry picked from commit 8e7e5c077cd57ee9a36d58c65f07257dc49a88d5) Signed-off-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/gem/i915_gem_mman.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -67,7 +67,7 @@ i915_gem_mmap_ioctl(struct drm_device *d * mmap ioctl is disallowed for all discrete platforms, * and for all platforms with GRAPHICS_VER > 12. */ - if (IS_DGFX(i915) || GRAPHICS_VER(i915) > 12) + if (IS_DGFX(i915) || GRAPHICS_VER_FULL(i915) > IP_VER(12, 0)) return -EOPNOTSUPP;
if (args->flags & ~(I915_MMAP_WC))