linux-kernel - Re: [PATCH] MIPS: fix tc

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Message-ID: <CAJd=RBD0Pd2Rx8qijj7GK8hWQBvEBXRzXFQAbtKu5X1wb9EhEQ@mail.gmail.com>
Date:	Sun, 29 Jul 2012 09:19:23 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	RongQing Li <roy.qing.li@...il.com>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: [PATCH] MIPS: fix tc_id calculation

On Sat, Jul 28, 2012 at 5:08 PM, RongQing Li <roy.qing.li@...il.com> wrote:
> Any advice
>
> 2012/7/2  <roy.qing.li@...il.com>:
>> From: RongQing.Li <roy.qing.li@...il.com>
>>
>> Now the tc_id is:
>>   (read_c0_tcbind() >> TCBIND_CURTC_SHIFT) & TCBIND_CURTC;
>> After substitute macro:
>>   (read_c0_tcbind() >> 21) & ((0xff) << 21)
>> It should be:
>>   (read_c0_tcbind() & ((0xff)<< 21)) >>21
>>
>> Signed-off-by: RongQing.Li <roy.qing.li@...il.com>
>> ---

Good catch ;)

Thanks,
               Hillf


>>  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 e7e03ec..afc379c 100644
>> --- a/arch/mips/kernel/smp-cmp.c
>> +++ b/arch/mips/kernel/smp-cmp.c
>> @@ -102,7 +102,7 @@ static void cmp_init_secondary(void)
>>         c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) & TCBIND_CURVPE;
>>  #endif
>>  #ifdef CONFIG_MIPS_MT_SMTC
>> -       c->tc_id  = (read_c0_tcbind() >> TCBIND_CURTC_SHIFT) & TCBIND_CURTC;
>> +       c->tc_id  = (read_c0_tcbind() & TCBIND_CURTC) >> TCBIND_CURTC_SHIFT;
>>  #endif
>>  }
>>
>> --
>> 1.7.1
>>
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