diff options
| author | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2016-12-07 16:22:39 +0200 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2016-12-08 09:37:23 +0200 |
| commit | 991914274bdde1e0de28cadc8eca4c736ec3fd07 (patch) | |
| tree | cec05bd18a374a7dfd93ae47b512805bbcae905c /drivers/gpu/drm/i915/intel_uncore.c | |
| parent | 73f67aa8cc3c0ab7299f2fc81049a7d8d934fef8 (diff) | |
drm/i915: Catch non-existent registers in find_fw_domain
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@intel.com>
Cc: Wang Elaine <elaine.wang@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1481120559-17413-1-git-send-email-joonas.lahtinen@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 2007b138af0e..8fc5f29e79a8 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 |