From 491749feb6fdd3798b5b263a15c1894965a23aea Mon Sep 17 00:00:00 2001 From: Paul Burton <paul.burton@imgtec.com> Date: Wed, 3 Feb 2016 03:15:26 +0000 Subject: [PATCH] MIPS: CM: Fix mips_cm_max_vp_width for UP kernels commit a60ae81e5e5918138703f22427dd8f2445985b55 upstream. Fix mips_cm_max_vp_width for UP kernels where it previously referenced smp_num_siblings, which is not declared for UP kernels. This led to build errors such as the following: drivers/built-in.o: In function `$L446': irq-mips-gic.c:(.text+0x1994): undefined reference to `smp_num_siblings' drivers/built-in.o:irq-mips-gic.c:(.text+0x199c): more undefined references to `smp_num_siblings' follow On UP kernels simply return 1, leaving the reference to smp_num_siblings in place only for SMP kernels. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12332/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/mips/include/asm/mips-cm.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h index d4635391c36a2..ec0510cc5c3cd 100644 --- a/arch/mips/include/asm/mips-cm.h +++ b/arch/mips/include/asm/mips-cm.h @@ -461,7 +461,10 @@ static inline unsigned int mips_cm_max_vp_width(void) if (mips_cm_revision() >= CM_REV_CM3) return read_gcr_sys_config2() & CM_GCR_SYS_CONFIG2_MAXVPW_MSK; - return smp_num_siblings; + if (config_enabled(CONFIG_SMP)) + return smp_num_siblings; + + return 1; } /**