From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 10 Jan 2013 09:18:49 +0000 (+0100)
Subject: ARM: integrator: move syscon remap for AP PCIv3
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=67c6b2ef2662b17cc2174f2bdc22a7cb818a8376;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ARM: integrator: move syscon remap for AP PCIv3

The Integrator/AP syscon remapping was done in the .setup()
function rather than .preinit() which is wrong - .preinit()
is called before .setup() and the former also use the syscon
base and cause a crash since it was not yet remapped.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
---

diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c
index be50e795536d..e7fcea7f3300 100644
--- a/arch/arm/mach-integrator/pci_v3.c
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -475,13 +475,12 @@ int __init pci_v3_setup(int nr, struct pci_sys_data *sys)
 {
 	int ret = 0;
 
+	if (!ap_syscon_base)
+		return -EINVAL;
+
 	if (nr == 0) {
 		sys->mem_offset = PHYS_PCI_MEM_BASE;
 		ret = pci_v3_setup_resources(sys);
-		/* Remap the Integrator system controller */
-		ap_syscon_base = ioremap(INTEGRATOR_SC_BASE, 0x100);
-		if (!ap_syscon_base)
-			return -EINVAL;
 	}
 
 	return ret;
@@ -497,6 +496,13 @@ void __init pci_v3_preinit(void)
 	unsigned int temp;
 	int ret;
 
+	/* Remap the Integrator system controller */
+	ap_syscon_base = ioremap(INTEGRATOR_SC_BASE, 0x100);
+	if (!ap_syscon_base) {
+		pr_err("unable to remap the AP syscon for PCIv3\n");
+		return;
+	}
+
 	pcibios_min_mem = 0x00100000;
 
 	/*