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From: jerin jacob <jerinjacobk@gmail.com>
To: ralf@linux-mips.org
Cc: jerin jacob <jerinjacobk@gmail.com>, linux-mips@linux-mips.org
Subject: [PATCH] MIPS:CMP Fix physical core number calculation logic
Date: Thu, 11 Oct 2012 22:18:51 +0530	[thread overview]
Message-ID: <1349974131-5856-1-git-send-email-jerinjacobk@gmail.com> (raw)

CPUNum Field in EBase register is 10bit wide, so after 1 bit right shift, mask
value should be 0x1ff

Signed-off-by: jerin jacob <jerinjacobk@gmail.com>
---
 arch/mips/kernel/smp-cmp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index afc379c..06cd0c6 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -97,7 +97,7 @@ static void cmp_init_secondary(void)
 
 	/* Enable per-cpu interrupts: platform specific */
 
-	c->core = (read_c0_ebase() >> 1) & 0xff;
+	c->core = (read_c0_ebase() >> 1) & 0x1ff;
 #if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_MIPS_MT_SMTC)
 	c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) & TCBIND_CURVPE;
 #endif
-- 
1.7.6.5

             reply	other threads:[~2012-10-11 16:50 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-11 16:48 jerin jacob [this message]
2012-10-18  9:45 ` [PATCH] MIPS:CMP Fix physical core number calculation logic Ralf Baechle

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