tree 21f052fc743818d0c14c85505293f96b9274a94c
parent 1720058343fa43a1a25bfad9e62ea06e7e9743b6
author Alan Stern <stern@rowland.harvard.edu> 1156952121 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1159383536 -0700

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>