From: Marc Dionne <marc.c.dionne@gmail.com>
Date: Fri, 1 Jun 2012 22:12:14 +0000 (-0400)
Subject: HID: logitech: don't use stack based dj_report structures
X-Git-Tag: v3.2.31~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01d35d12e9a77448d7e6e5ab653ae8ff93fecd26;p=pandora-kernel.git

HID: logitech: don't use stack based dj_report structures

commit d8dc3494f77a5cc3b274bae36f7e74e85cf8a407 upstream.

On a system with a logitech wireless keyboard/mouse and DMA-API debugging
enabled, this warning appears at boot:

kernel: WARNING: at lib/dma-debug.c:929 check_for_stack.part.12+0x70/0xa7()
kernel: Hardware name: MS-7593
kernel: uhci_hcd 0000:00:1d.1: DMA-API: device driver maps memory fromstack [addr=ffff8801b0079c29]

Make logi_dj_recv_query_paired_devices and logi_dj_recv_switch_to_dj_mode
use a structure allocated with kzalloc rather than a stack based one.

Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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