arch: remove blackfin port

The Analog Devices Blackfin port was added in 2007 and was rather
active for a while, but all work on it has come to a standstill
over time, as Analog have changed their product line-up.

Aaron Wu confirmed that the architecture port is no longer relevant,
and multiple people suggested removing blackfin independently because
of some of its oddities like a non-working SMP port, and the amount of
duplication between the chip variants, which cause extra work when
doing cross-architecture changes.

Link: https://docs.blackfin.uclinux.org/
Acked-by: Aaron Wu <Aaron.Wu@analog.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 44 deletions

diff --git a/arch/blackfin/include/asm/checksum.h b/arch/blackfin/include/asm/checksum.h
deleted file mode 100644
index e7134bf94e3c..000000000000
--- a/arch/blackfin/include/asm/checksum.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *                     akbar.hussain@lineo.com
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef _BFIN_CHECKSUM_H
-#define _BFIN_CHECKSUM_H
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-
-static inline __wsum
-__csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
-		     __u8 proto, __wsum sum)
-{
-	unsigned int carry;
-
-	__asm__ ("%0 = %0 + %2;\n\t"
-		"CC = AC0;\n\t"
-		"%1 = CC;\n\t"
-		"%0 = %0 + %1;\n\t"
-		"%0 = %0 + %3;\n\t"
-		"CC = AC0;\n\t"
-		"%1 = CC;\n\t"
-		"%0 = %0 + %1;\n\t"
-		"%0 = %0 + %4;\n\t"
-		"CC = AC0;\n\t"
-		"%1 = CC;\n\t"
-		"%0 = %0 + %1;\n\t"
-		: "=d" (sum), "=&d" (carry)
-		: "d" (daddr), "d" (saddr), "d" ((len + proto) << 8), "0"(sum)
-		: "CC");
-
-	return (sum);
-}
-#define csum_tcpudp_nofold __csum_tcpudp_nofold
-
-#include <asm-generic/checksum.h>
-
-#endif