From: Alan Stern <stern@rowland.harvard.edu>
Date: Wed, 30 Aug 2006 15:35:21 +0000 (-0400)
Subject: usbmon: don't call mon_dmapeek if DMA isn't being used
X-Git-Tag: v2.6.19-rc1~899^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d6cd48380c4d361cc8ec34359df22377d85d202;p=pandora-kernel.git

usbmon: don't call mon_dmapeek if DMA isn't being used

This patch (as755b) fixes a bug in usbmon.  Rather than assuming all
USB host controllers use DMA, the code will check the usb_bus data
structure.  If DMA isn't used, we don't want to try peeking into a
non-existent DMA buffer!

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

Reading git-diff-tree failed