From: Johannes Berg <johannes.berg@intel.com>
Date: Sun, 4 Nov 2012 08:29:17 +0000 (+0100)
Subject: iwlwifi: handle DMA mapping failures
X-Git-Tag: v3.2.36~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efd6621c748efd652b53ac6e718915bbbdca645e;p=pandora-kernel.git

iwlwifi: handle DMA mapping failures

commit 7c34158231b2eda8dcbd297be2bb1559e69cb433 upstream.

The RX replenish code doesn't handle DMA mapping failures,
which will cause issues if there actually is a failure. This
was reported by Shuah Khan who found a DMA mapping framework
warning ("device driver failed to check map error").

Reported-by: Shuah Khan <shuah.khan@hp.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[bwh: Backported to 3.2:
 - Adjust filename, context, indentation
 - Use bus(trans) instead of trans where necessary
 - Use hw_params(trans).rx_page_order instead of trans_pcie->rx_page_order]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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