[Intel-gfx] [PATCH v3 5/9] drm/i915/perf: Fail modprobe if i915_perf_init fails on OOM

[Umesh Nerlige Ramappa]

i915_perf_init can fail due to OOM. Fail driver init if i915_perf_init
fails.

v2: (Jani)
- Reorder patch in the series

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.rama...@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.di...@intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c | 4 +++-
 drivers/gpu/drm/i915/i915_perf.c   | 8 ++++++--
 drivers/gpu/drm/i915/i915_perf.h   | 2 +-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_driver.c 
b/drivers/gpu/drm/i915/i915_driver.c
index 0c0ae3eabb4b..998ca41c9713 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -477,7 +477,9 @@ static int i915_driver_hw_probe(struct drm_i915_private 
*dev_priv)
        if (ret)
                return ret;
 
-       i915_perf_init(dev_priv);
+       ret = i915_perf_init(dev_priv);
+       if (ret)
+               return ret;
 
        ret = i915_ggtt_probe_hw(dev_priv);
        if (ret)
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 2554f7a470c9..2b80f0482884 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -4903,7 +4903,7 @@ static void i915_perf_init_info(struct drm_i915_private 
*i915)
  * Note: i915-perf initialization is split into an 'init' and 'register'
  * phase with the i915_perf_register() exposing state to userspace.
  */
-void i915_perf_init(struct drm_i915_private *i915)
+int i915_perf_init(struct drm_i915_private *i915)
 {
        struct i915_perf *perf = &i915->perf;
 
@@ -5019,12 +5019,16 @@ void i915_perf_init(struct drm_i915_private *i915)
                perf->i915 = i915;
 
                ret = oa_init_engine_groups(perf);
-               if (ret)
+               if (ret) {
                        drm_err(&i915->drm,
                                "OA initialization failed %d\n", ret);
+                       return ret;
+               }
 
                oa_init_supported_formats(perf);
        }
+
+       return 0;
 }
 
 static int destroy_config(int id, void *p, void *data)
diff --git a/drivers/gpu/drm/i915/i915_perf.h b/drivers/gpu/drm/i915/i915_perf.h
index f96e09a4af04..253637651d5e 100644
--- a/drivers/gpu/drm/i915/i915_perf.h
+++ b/drivers/gpu/drm/i915/i915_perf.h
@@ -18,7 +18,7 @@ struct i915_oa_config;
 struct intel_context;
 struct intel_engine_cs;
 
-void i915_perf_init(struct drm_i915_private *i915);
+int i915_perf_init(struct drm_i915_private *i915);
 void i915_perf_fini(struct drm_i915_private *i915);
 void i915_perf_register(struct drm_i915_private *i915);
 void i915_perf_unregister(struct drm_i915_private *i915);
-- 
2.36.1