Add WARN_ON to find_fw_domain to registers related to uninitialized hardware. v2: - Print the uninitialized domains and register (Chris) Cc: Imre Deak <imre.deak@xxxxxxxxx> Cc: Wang Elaine <elaine.wang@xxxxxxxxx> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_uncore.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 07779d0..88f3611 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -625,7 +625,14 @@ find_fw_domain(struct drm_i915_private *dev_priv, u32 offset) dev_priv->uncore.fw_domains_table_entries, fw_range_cmp); - return entry ? entry->domains : 0; + if (!entry) + return 0; + + WARN(entry->domains & ~dev_priv->uncore.fw_domains, + "Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n", + entry->domains & ~dev_priv->uncore.fw_domains, offset); + + return entry->domains; } static void -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
