linux-kernel - [PATCH v2 2/3] powerpc/64: Enable pcibios_after

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Message-Id: <20190528015412.30521-3-shawn@anastas.io>
Date:   Mon, 27 May 2019 20:54:11 -0500
From:   Shawn Anastasio <shawn@...stas.io>
To:     linux-pci@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Cc:     bhelgaas@...gle.com, benh@...nel.crashing.org, paulus@...ba.org,
        mpe@...erman.id.au, sbobroff@...ux.ibm.com,
        xyjxie@...ux.vnet.ibm.com, rppt@...ux.ibm.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] powerpc/64: Enable pcibios_after_init hook on ppc64

Enable the pcibios_after_init hook on all powerpc platforms.
This hook is executed at the end of pcibios_init and was previously
only available on CONFIG_PPC32.

Since it is useful and not inherently limited to 32-bit mode,
remove the limitation and allow it on all powerpc platforms.

Signed-off-by: Shawn Anastasio <shawn@...stas.io>
---
 arch/powerpc/include/asm/machdep.h | 3 +--
 arch/powerpc/kernel/pci_64.c       | 4 ++++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 2f0ca6560e47..2fbfaa9176ed 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -150,6 +150,7 @@ struct machdep_calls {
 	void		(*init)(void);
 
 	void		(*kgdb_map_scc)(void);
+#endif /* CONFIG_PPC32 */
 
 	/*
 	 * optional PCI "hooks"
@@ -157,8 +158,6 @@ struct machdep_calls {
 	/* Called at then very end of pcibios_init() */
 	void (*pcibios_after_init)(void);
 
-#endif /* CONFIG_PPC32 */
-
 	/* Called in indirect_* to avoid touching devices */
 	int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
 
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 9d8c10d55407..fba7fe6e4a50 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -68,6 +68,10 @@ static int __init pcibios_init(void)
 
 	printk(KERN_DEBUG "PCI: Probing PCI hardware done\n");
 
+	/* Call machine dependent post-init code */
+	if (ppc_md.pcibios_after_init)
+		ppc_md.pcibios_after_init();
+
 	return 0;
 }
 
-- 
2.20.1