From: Will Deacon <will.deacon@arm.com>
Date: Wed, 6 Feb 2013 18:25:12 +0000 (+0000)
Subject: ARM: integrator: ensure ap_syscon_base is initialised when !CONFIG_MMU
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=ab2a724a2ef9cee5957692257a5d1f08fd7acbbd;p=linux-edison.git

ARM: integrator: ensure ap_syscon_base is initialised when !CONFIG_MMU

When running on Integrator/AP using atags, ap_syscon_base is initialised
in ->map_io, which isn't called for !MMU platforms.

Instead, initialise the pointer in ->machine_init, as we do when booting
with device-tree.

Cc: stable@vger.kernel.org
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
---

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 11e2a414580..26762bf4130 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -613,7 +613,6 @@ static struct map_desc ap_io_desc_atag[] __initdata = {
 static void __init ap_map_io_atag(void)
 {
 	iotable_init(ap_io_desc_atag, ARRAY_SIZE(ap_io_desc_atag));
-	ap_syscon_base = __io_address(INTEGRATOR_SC_BASE);
 	ap_map_io();
 }
 
@@ -685,6 +684,7 @@ static void __init ap_init(void)
 
 	platform_device_register(&cfi_flash_device);
 
+	ap_syscon_base = __io_address(INTEGRATOR_SC_BASE);
 	sc_dec = readl(ap_syscon_base + INTEGRATOR_SC_DEC_OFFSET);
 	for (i = 0; i < 4; i++) {
 		struct lm_device *lmdev;