i965: fix segfault caused by commit e131c46b20241737ceba4856dbe01dcca6dd2c03.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_span.c b/src/mesa/drivers/dri/intel/intel_span.c
index 298e453c42..df4f5927a0 100644
--- a/src/mesa/drivers/dri/intel/intel_span.c
+++ b/src/mesa/drivers/dri/intel/intel_span.c
@@ -264,7 +264,7 @@ intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
    /* depth buffer (Note wrapper!) */
    if (ctx->DrawBuffer->_DepthBuffer) {
       irb = intel_renderbuffer(ctx->DrawBuffer->_DepthBuffer->Wrapped);
-      if (irb && irb->region && irb->Base.Name != 0) {
+      if (irb && irb->region) {
          if (map) {
             intel_region_map(intel, irb->region);
             irb->pfMap = irb->region->map;
@@ -272,8 +272,8 @@ intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
          }
          else {
             intel_region_unmap(intel, irb->region);
-            irb->pfMap = NULL;
-            irb->pfPitch = 0;
+            irb->pfMap = irb->region->map;
+            irb->pfPitch = irb->region->pitch;
          }
       }
    }
@@ -281,7 +281,7 @@ intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
    /* stencil buffer (Note wrapper!) */
    if (ctx->DrawBuffer->_StencilBuffer) {
       irb = intel_renderbuffer(ctx->DrawBuffer->_StencilBuffer->Wrapped);
-      if (irb && irb->region && irb->Base.Name != 0) {
+      if (irb && irb->region) {
          if (map) {
             intel_region_map(intel, irb->region);
             irb->pfMap = irb->region->map;
@@ -289,8 +289,8 @@ intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
          }
          else {
             intel_region_unmap(intel, irb->region);
-            irb->pfMap = NULL;
-            irb->pfPitch = 0;
+            irb->pfMap = irb->region->map;
+            irb->pfPitch = irb->region->pitch;
          }
       }
    }