Commit 93d16f15 authored Sep 07, 2015 by Russell King Committed by Amit Pundir Oct 28, 2016

UPSTREAM: ARM: swpan: fix nwfpe for uaccess changes



NWFPE needs to access userspace to check whether the next instruction
is another FP instruction.  Allow userspace access for this read.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Change-Id: I3064718b9879af018960cda62274891abfaf44a8
(cherry picked from commit 39dc53deff30d9b239ac36cfeb0ef2022d03a449)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

parent de356751

arch/arm/nwfpe/entry.S

+2 −1

Original line number	Diff line number	Diff line
		@@ -95,9 +95,10 @@ emulate:
		reteq r4 @ no, return failure

		next:
		uaccess_enable r3
		.Lx1: ldrt r6, [r5], #4 @ get the next instruction and
		@ increment PC

		uaccess_disable r3
		and r2, r6, #0x0F000000 @ test for FP insns
		teq r2, #0x0C000000
		teqne r2, #0x0D000000