linux-kernel - [PATCH 3.2 94/94] Revert "alpha: fix broken network checksum"

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Message-ID: <lsq.1398647482.332280880@decadent.org.uk>
Date:	Mon, 28 Apr 2014 02:11:22 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org
Subject: [PATCH 3.2 94/94] Revert "alpha: fix broken network checksum"

3.2.58-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

This reverts commit b93b90ff7c50288d602108ae1a09673df3f799a8, which
was commit 0ef38d70d4118b2ce1a538d14357be5ff9dc2bbd upstream.
It was intended to fix a regression which never occurred in 3.2.

--- a/arch/alpha/lib/csum_partial_copy.c
+++ b/arch/alpha/lib/csum_partial_copy.c
@@ -373,11 +373,6 @@
 __wsum
 csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
 {
-	__wsum checksum;
-	mm_segment_t oldfs = get_fs();
-	set_fs(KERNEL_DS);
-	checksum = csum_partial_copy_from_user((__force const void __user *)src,
-						dst, len, sum, NULL);
-	set_fs(oldfs);
-	return checksum;
+	return csum_partial_copy_from_user((__force const void __user *)src,
+			dst, len, sum, NULL);
 }

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