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From e3edaac2e967f07ae3b726e64e1c290233361bc7 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Wed, 14 Mar 2012 10:29:24 +0100
Subject: [PATCH 08/47] MIPS: ath79: add a common PCI registration function
The current code unconditionally registers the AR724X
specific PCI controller, even if the kernel is running
on a different SoC.
Add a common function for PCI controller registration,
and only register the AR724X PCI controller if the kernel
is running on an AR724X SoC.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3488/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/ath79/mach-ubnt-xm.c | 1 +
arch/mips/ath79/pci.c | 10 ++++++++++
arch/mips/ath79/pci.h | 6 ++++++
arch/mips/pci/pci-ath724x.c | 2 --
4 files changed, 17 insertions(+), 2 deletions(-)
--- a/arch/mips/ath79/mach-ubnt-xm.c
+++ b/arch/mips/ath79/mach-ubnt-xm.c
@@ -111,6 +111,7 @@ static void __init ubnt_xm_init(void)
ath724x_pci_add_data(ubnt_xm_pci_data, ARRAY_SIZE(ubnt_xm_pci_data));
#endif /* CONFIG_PCI */
+ ath79_register_pci();
}
MIPS_MACHINE(ATH79_MACH_UBNT_XM,
--- a/arch/mips/ath79/pci.c
+++ b/arch/mips/ath79/pci.c
@@ -9,6 +9,8 @@
*/
#include <linux/pci.h>
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/pci.h>
#include "pci.h"
static struct ath724x_pci_data *pci_data;
@@ -44,3 +46,11 @@ int pcibios_plat_dev_init(struct pci_dev
return PCIBIOS_SUCCESSFUL;
}
+
+int __init ath79_register_pci(void)
+{
+ if (soc_is_ar724x())
+ return ath724x_pcibios_init();
+
+ return -ENODEV;
+}
--- a/arch/mips/ath79/pci.h
+++ b/arch/mips/ath79/pci.h
@@ -18,4 +18,10 @@ struct ath724x_pci_data {
void ath724x_pci_add_data(struct ath724x_pci_data *data, int size);
+#ifdef CONFIG_PCI
+int ath79_register_pci(void);
+#else
+static inline int ath79_register_pci(void) { return 0; }
+#endif
+
#endif /* __ASM_MACH_ATH79_PCI_ATH724X_H */
--- a/arch/mips/pci/pci-ath724x.c
+++ b/arch/mips/pci/pci-ath724x.c
@@ -137,5 +137,3 @@ int __init ath724x_pcibios_init(void)
return PCIBIOS_SUCCESSFUL;
}
-
-arch_initcall(ath724x_pcibios_init);
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