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ARM: swpan: fix nwfpe for uaccess changes

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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>
This commit is contained in:
Russell King 2015-09-07 00:29:15 +01:00
parent a5e090acbf
commit 39dc53deff
1 changed files with 2 additions and 1 deletions
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3
arch/arm/nwfpe/entry.S
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@ -95,9 +95,10 @@ emulate:
reteq r4 @ no, return failure reteq r4 @ no, return failure
next: next:
uaccess_enable r3
.Lx1: ldrt r6, [r5], #4 @ get the next instruction and .Lx1: ldrt r6, [r5], #4 @ get the next instruction and
@ increment PC @ increment PC
uaccess_disable r3
and r2, r6, #0x0F000000 @ test for FP insns and r2, r6, #0x0F000000 @ test for FP insns
teq r2, #0x0C000000 teq r2, #0x0C000000
teqne r2, #0x0D000000 teqne r2, #0x0D000000