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@xxxxxxxxx>
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@xxxxxxxxx>
Acked-by: Nicolas Pitre <nico@xxxxxxxxxxx>
Acked-by: Artem Bityutskiy <dedekind1@xxxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Jamie Lokier <jamie@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxx are
origin.patch
linux-next.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
