linux-kernel - [ 102/147] drivers/dma/dmaengine.c: lower the priority of failed to get dma channel message

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Date:	Sun, 14 Oct 2012 15:37:15 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [ 102/147] drivers/dma/dmaengine.c: lower the priority of failed to get dma
 channel message

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Fabio Estevam <fabio.estevam@...escale.com>

commit 0eb5a35801df3c438ce3fc91310a415ea4452c00 upstream.

Do the same as commit a03a202e95fd ("dmaengine: failure to get a
specific DMA channel is not critical") to get rid of the following
messages during kernel boot:

  dmaengine_get: failed to get dma1chan0: (-22)
  dmaengine_get: failed to get dma1chan1: (-22)
  dmaengine_get: failed to get dma1chan2: (-22)
  dmaengine_get: failed to get dma1chan3: (-22)
  ..

Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
Cc: Vinod Koul <vinod.koul@...el.com>
Cc: Dan Williams <dan.j.williams@...el.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
[bwh: Backported to 3.2: also apply changes to this logging statement
 from commit 634332502366 ('dmaengine: Cleanup logging messages')]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -564,8 +564,8 @@ void dmaengine_get(void)
 				list_del_rcu(&device->global_node);
 				break;
 			} else if (err)
-				pr_err("dmaengine: failed to get %s: (%d)\n",
-				       dma_chan_name(chan), err);
+				pr_debug("%s: failed to get %s: (%d)\n",
+				       __func__, dma_chan_name(chan), err);
 		}
 	}
 


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