[Mesa-stable] [PATCH 2/2] i965: unref push_const_bo in intelDestroyContext

[Tapani Pälli]

Valgrind shows that leak is caused by gen6_upload_push_constant, add
unref push_const_bo per stage to destructor to fix this (like done for
scratch_bo).

   ==10952== 144 bytes in 1 blocks are definitely lost in loss record 44 of 66
   ==10952==    at 0x4C30A1E: calloc (vg_replace_malloc.c:711)
   ==10952==    by 0x8C02847: bo_alloc_internal.constprop.10 (brw_bufmgr.c:344)
   ==10952==    by 0x8C425C4: intel_upload_space (intel_upload.c:101)
   ==10952==    by 0x8C22ED0: gen6_upload_push_constants (gen6_constant_state.c:154)

v2: remove if conditions, brw_bo_unreference handles NULL (Ken, Emil)

Fixes: 24891d7c05 ("i965: Store per-stage push constant BO pointers.")
Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
Cc: mesa-stable at lists.freedesktop.org
---
 src/mesa/drivers/dri/i965/brw_context.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 39b2a938f6..eed42468b1 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -1068,6 +1068,12 @@ intelDestroyContext(__DRIcontext * driContextPriv)
    brw_bo_unreference(brw->gs.base.scratch_bo);
    brw_bo_unreference(brw->wm.base.scratch_bo);
 
+   brw_bo_unreference(brw->vs.base.push_const_bo);
+   brw_bo_unreference(brw->tcs.base.push_const_bo);
+   brw_bo_unreference(brw->tes.base.push_const_bo);
+   brw_bo_unreference(brw->gs.base.push_const_bo);
+   brw_bo_unreference(brw->wm.base.push_const_bo);
+
    brw_destroy_hw_context(brw->bufmgr, brw->hw_ctx);
 
    if (ctx->swrast_context) {
-- 
2.13.6