gcc-4.7.3 is confused by the guards inside intel_ppat_get() and reports:
drivers/gpu/drm/i915/i915_gem_gtt.c: In function ‘intel_ppat_get’:
drivers/gpu/drm/i915/i915_gem_gtt.c:3044:27: warning: ‘entry’ may be used uninitialized in this function [-Wmaybe-uninitialized]
Forgive the compiler this once, and rearrange the code so that entry is
always initialised.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Zhi Wang <zhi.a.wang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 3c3a699436c9..10e3c6e64d9e 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3076,7 +3076,7 @@ const struct intel_ppat_entry *
intel_ppat_get(struct drm_i915_private *i915, u8 value)
{
struct intel_ppat *ppat = &i915->ppat;
- struct intel_ppat_entry *entry;
+ struct intel_ppat_entry *entry = ERR_PTR(-ENOSPC);
unsigned int scanned, best_score;
int i;
@@ -3099,10 +3099,8 @@ intel_ppat_get(struct drm_i915_private *i915, u8 value)
}
if (scanned == ppat->max_entries) {
- if (!best_score)
- return ERR_PTR(-ENOSPC);
-
- kref_get(&entry->ref);
+ if (best_score)
+ kref_get(&entry->ref);
return entry;
}
--
2.15.0
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