[merged] mtd-fix-orion-nand-driver-compilation-with-arm-oabi.patch removed from -mm tree

[merged] mtd-fix-orion-nand-driver-compilation-with-arm-oabi.patch removed from -mm tree

[akpm]

The patch titled
     mtd: fix Orion NAND driver compilation with ARM OABI
has been removed from the -mm tree.  Its filename was
     mtd-fix-orion-nand-driver-compilation-with-arm-oabi.patch

This patch was dropped because it was merged into mainline or a subsystem tree

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: mtd: fix Orion NAND driver compilation with ARM OABI
From: Paulius Zaleckas <paulius.zaleckas@gmail.com>

We must tell GCC to use even register for variable passed to ldrd
instruction.  Without this patch GCC 4.2.1 puts this variable to r2/r3 on
EABI and r3/r4 on OABI, so force it to r2/r3.  This does not change
anything when EABI and OABI compilation works OK.

Without this patch and with OABI I get:
  CC      drivers/mtd/nand/orion_nand.o
/tmp/ccMkwOCs.s: Assembler messages:
/tmp/ccMkwOCs.s:63: Error: first destination register must be even -- `ldrd r3,[ip]'
make[5]: *** [drivers/mtd/nand/orion_nand.o] Error 1

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jamie Lokier <jamie@shareable.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/mtd/nand/orion_nand.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff -puN drivers/mtd/nand/orion_nand.c~mtd-fix-orion-nand-driver-compilation-with-arm-oabi drivers/mtd/nand/orion_nand.c
--- a/drivers/mtd/nand/orion_nand.c~mtd-fix-orion-nand-driver-compilation-with-arm-oabi
+++ a/drivers/mtd/nand/orion_nand.c
@@ -60,7 +60,13 @@ static void orion_nand_read_buf(struct m
 	}
 	buf64 = (uint64_t *)buf;
 	while (i < len/8) {
-		uint64_t x;
+		/*
+		 * Since GCC has no proper constraint (PR 43518)
+		 * force x variable to r2/r3 registers as ldrd instruction
+		 * requires first register to be even.
+		 */
+		register uint64_t x asm ("r2");
+
 		asm volatile ("ldrd\t%0, [%1]" : "=&r" (x) : "r" (io_base));
 		buf64[i++] = x;
 	}
_

Patches currently in -mm which might be from paulius.zaleckas@gmail.com are

origin.patch
linux-next.patch