From 83911b9e069169fffd82212f478952d474ee1e8d Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: Fri, 27 Mar 2015 00:27:18 -0700
Subject: [PATCH] scsi: storvsc: Fix a bug in copy_from_bounce_buffer()

commit 8de580742fee8bc34d116f57a20b22b9a5f08403 upstream.

We may exit this function without properly freeing up the maapings
we may have acquired. Fix the bug.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
[bwh: Backported to 3.2:
 - Adjust filename
 - Keep using kmap_atomic()/kunmap_atomic(), not the sg_-prefixed functions]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
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