From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 8 May 2014 16:25:56 +0000 (+0300)
Subject: usb: catch attempts to submit urbs with a vmalloc'd transfer buffer
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~34^2~179
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29d2fef8be1165a26984a94fbcf81d68c1442fc5;p=pandora-kernel.git

usb: catch attempts to submit urbs with a vmalloc'd transfer buffer

Save someone else the debug cycles of figuring out why a driver's
transfer request is failing or causing undefined system behavior.
Buffers submitted for dma must come from GFP allocated / DMA-able
memory.

Return -EAGAIN matching the return value for dma_mapping_error() cases.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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