[ofw] [PATCH] Fix uncontrollable debug spew from mlx4_hca driver

[Fab Tillier]

The mlx4_hca driver will spew stuff to the debugger on every MAD WQE processed, which makes the debugger close to useless as any useful output is drowned out.

This patch makes it so that the debug flags are checked before generating output.

Signed-off-by: Fab Tillier <ftillier at microsoft.com>

Index: hw/mlx4/kernel/bus/drv/stat.c
===================================================================
--- hw/mlx4/kernel/bus/drv/stat.c	(revision 3068)
+++ hw/mlx4/kernel/bus/drv/stat.c	(working copy)
@@ -146,9 +146,11 @@ void st_dump_mlx_wqe(struct mlx4_dev *md
 	UNUSED_PARAM(wr);
 #endif
 	
-	mlx4_dbg(mdev, "\n\t ========== MLX WQE at %p, size %#x ==========\n",
-		wqe, size_in_dwords*4 );
-	
+	if ( mdev->pdev->p_stat_dev->flags & MLX4_MAD_TRACE_WR ) {
+		mlx4_dbg(mdev, "\n\t ========== MLX WQE at %p, size %#x ==========\n",
+			wqe, size_in_dwords*4 );
+	}
+
 	if ( mdev->pdev->p_stat_dev->flags & MLX4_MAD_TRACE_MLX_WQE_DUMP ) {
 		for ( j = 0; j < size_in_dwords; ++j ) {
 			mlx4_warn( mdev, "\t %04x:	%08x %08x %08x %08x \n", 16*j,
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