From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 25 Oct 2010 09:42:42 +0000 (+0200)
Subject: firewire: ohci: avoid reallocation of AR buffers
X-Git-Tag: v2.6.37-rc2~86^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=837596a61ba8f9bb53bb7aa27d17328ff9b2bcd5;p=pandora-kernel.git

firewire: ohci: avoid reallocation of AR buffers

Freeing an AR buffer page just to allocate a new page immediately
afterwards is not only a pointless effort but also dangerous because
the allocation can fail, which would result in an oops later.

Split ar_context_add_page() into two functions so that we can reuse
the old page directly.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---

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