From: Will Deacon <will.deacon@arm.com>
Date: Fri, 22 Aug 2014 13:20:24 +0000 (+0100)
Subject: arm64: ptrace: fix compat reg getter/setter return values
X-Git-Tag: fixes-v3.17-rc4~33^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85487edd252fa04718dcd735bc0f41213bbb9546;p=pandora-kernel.git

arm64: ptrace: fix compat reg getter/setter return values

copy_{to,from}_user return the number of bytes remaining on failure, not
an error code.

This patch returns -EFAULT when the copy operation didn't complete,
rather than expose the number of bytes not copied directly to userspace.

Signed-off-by: Will Deacon <will.deacon@arm.com>
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