[PATCH 5.14 154/432] MIPS: Malta: fix alignment of the devicetree buffer

Greg Kroah-Hartman
2021-09-16T17:25:42Z

From: Oleksij Rempel <o.rempel@pengutronix.de>

[ Upstream commit bea6a94a279bcbe6b2cde348782b28baf12255a5 ]

Starting with following patch MIPS Malta is not able to boot:
| commit 79edff12060fe7772af08607eff50c0e2486c5ba
| Author: Rob Herring <robh@kernel.org>
| scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9

The reason is the alignment test added to the fdt_ro_probe_(). To fix
this issue, we need to make sure that fdt_buf is aligned.

Since the dtc patch was designed to uncover potential issue, I handle
initial MIPS Malta patch as initial bug.

Fixes: e81a8c7dabac ("MIPS: Malta: Setup RAM regions via DT")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/mti-malta/malta-dtshim.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/mti-malta/malta-dtshim.c b/arch/mips/mti-malta/malta-dtshim.c
index 0ddf03df6268..f451268f6c38 100644
--- a/arch/mips/mti-malta/malta-dtshim.c
+++ b/arch/mips/mti-malta/malta-dtshim.c
@@ -22,7 +22,7 @@
#define ROCIT_CONFIG_GEN1_MEMMAP_SHIFT 8
#define ROCIT_CONFIG_GEN1_MEMMAP_MASK (0xf << 8)

-static unsigned char fdt_buf[16 << 10] __initdata;
+static unsigned char fdt_buf[16 << 10] __initdata __aligned(8);

/* determined physical memory size, not overridden by command line args */
extern unsigned long physical_memsize;
--
2.30.2