linux-kernel - [PATCH 3.16 065/158] MIPS: smp-mt: Fix link error when PROC

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Date:	Mon, 15 Sep 2014 12:25:04 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, James Hogan <james.hogan@...tec.com>,
	Markos Chandras <markos.chandras@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: [PATCH 3.16 065/158] MIPS: smp-mt: Fix link error when PROC_FS=n

3.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: James Hogan <james.hogan@...tec.com>

commit 7d907fa1c6ccb64c7f64cc7d3dcc7f6fe30a67b4 upstream.

Commit d6d3c9afaab4 (MIPS: MT: proc: Add support for printing VPE and TC
ids) causes a link error when CONFIG_PROC_FS=n:

arch/mips/built-in.o: In function `proc_cpuinfo_notifier_init':
smp-mt.c: undefined reference to `register_proc_cpuinfo_notifier'

This is fixed by adding an ifdef around the procfs handling code
in smp-mt.c.

Signed-off-by: James Hogan <james.hogan@...tec.com>
Reported-by: Markos Chandras <markos.chandras@...tec.com>
Reviewed-by: Markos Chandras <markos.chandras@...tec.com>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7244/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/kernel/smp-mt.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -288,6 +288,7 @@ struct plat_smp_ops vsmp_smp_ops = {
 	.prepare_cpus		= vsmp_prepare_cpus,
 };
 
+#ifdef CONFIG_PROC_FS
 static int proc_cpuinfo_chain_call(struct notifier_block *nfb,
 	unsigned long action_unused, void *data)
 {
@@ -309,3 +310,4 @@ static int __init proc_cpuinfo_notifier_
 }
 
 subsys_initcall(proc_cpuinfo_notifier_init);
+#endif


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