Thread (8 messages) 8 messages, 3 authors, 2013-10-28

Re: [PATCH 2/8] farsync: Fix confusion about DMA address and buffer offset types

From: Ben Hutchings <hidden>
Date: 2013-10-28 04:51:47
Also in: lkml

On Mon, 2013-10-28 at 00:26 -0400, David Miller wrote:
From: Ben Hutchings <redacted>
Date: Sun, 27 Oct 2013 21:51:44 +0000
quoted
-     dbg(DBG_TX, "In fst_tx_dma %p %p %d\n", skb, mem, len);
+     dbg(DBG_TX, "In fst_tx_dma %x %x %d\n", (u32)skb, mem, len);
Please use %p for the skb pointer instead of casting it (which btw
will introduce a warning on 64-bit).
skb is the DMA address of the data in the sk_buff.  Yes, this is really
unusual naming.

Ben.

-- 
Ben Hutchings
[W]e found...that it wasn't as easy to get programs right as we had thought.
... I realized that a large part of my life from then on was going to be spent
in finding mistakes in my own programs. - Maurice Wilkes, 1949

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