linux-kernel - DRM/ttm: Unreachable code in ttm_bo_add

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Date:	Mon, 07 Dec 2009 21:42:21 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Thomas Hellstrom <thellstrom@...are.com>
CC:	Dave Airlie <airlied@...hat.com>, dri-devel@...ts.sourceforge.net,
	LKML <linux-kernel@...r.kernel.org>
Subject: DRM/ttm: Unreachable code in ttm_bo_add_ttm

Hi,

Stanse found unreachable code in ttm_bo_add_ttm:
http://decibel.fi.muni.cz/~xslaby/stanse/error.cgi?db=32&id=714#l238

Excerpt from there:
  230| case ttm_bo_type_user:
  231|  bo->ttm = ttm_tt_create(bdev, bo->num_pages << 12,
  232|     page_flags | (1 << 1),
  233|     glob->dummy_read_page);
  234|  if (bo->ttm == ((void *)0))
  235|   ret = -12;
  236|  break;
  237|
  238|  ret = ttm_tt_set_user(bo->ttm, get_current(),
     |This node is unreachable prev next
  239|          bo->buffer_start, bo->num_pages);
  240|  if (ret != 0)
  241|   ttm_tt_destroy(bo->ttm);
  242|  break;


regards,
-- 
js
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