From: [EMAIL PROTECTED] (Lennart Sorensen)
Subject: Re: fix typo in geode_configre()@cyrix.c
Date: Tue, 16 Jan 2007 11:50:07 -0500
> On Wed, Jan 17, 2007 at 01:38:35AM +0900, takada wrote:
> > You are right. I agree to your comment. These variables are needless.
> > I made a patch again.
>
> Of course there are also lots of "magic numbers" around, but I must
> admit I don't personally really feel like going through the data sheet
> and naming all of them.
Me too.
>
> > diff -Narup linux-2.6.19.orig/arch/i386/kernel/cpu/cyrix.c
> > linux-2.6.19/arch/i386/kernel/cpu/cyrix.c
> > --- linux-2.6.19.orig/arch/i386/kernel/cpu/cyrix.c 2006-11-30
> > 06:57:37.000000000 +0900
> > +++ linux-2.6.19/arch/i386/kernel/cpu/cyrix.c 2007-01-16
> > 19:55:05.000000000 +0900
> > @@ -161,19 +161,15 @@ static void __cpuinit set_cx86_inc(void)
> > static void __cpuinit geode_configure(void)
> > {
> > unsigned long flags;
> > - u8 ccr3, ccr4;
> > local_irq_save(flags);
> >
> > /* Suspend on halt power saving and enable #SUSP pin */
> > setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88);
> >
> > - ccr3 = getCx86(CX86_CCR3);
> > - setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* Enable */
> > + setCx86(CX86_CCR3, (getCx86(CX86_CCR3) & 0x0f) | 0x10); /* Enable */
> >
> > - ccr4 = getCx86(CX86_CCR4);
> > - ccr4 |= 0x38; /* FPU fast, DTE cache, Mem bypass */
> > -
> > - setCx86(CX86_CCR3, ccr3);
> > + /* FPU fast, DTE cache, Mem bypass */
> > + setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x30);
>
> Why did that change from 0x38 to 0x30?
ah... I made mistake. My eye is tired.
Correctry, 0x38.
>
> > set_cx86_memwb();
> > set_cx86_reorder();
> > @@ -415,15 +411,14 @@ static void __cpuinit cyrix_identify(str
> >
> > if (dir0 == 5 || dir0 == 3)
> > {
> > - unsigned char ccr3, ccr4;
> > + unsigned char ccr3;
> > unsigned long flags;
> > printk(KERN_INFO "Enabling CPUID on Cyrix
> > processor.\n");
> > local_irq_save(flags);
> > ccr3 = getCx86(CX86_CCR3);
> > - setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable
> > MAPEN */
> > - ccr4 = getCx86(CX86_CCR4);
> > - setCx86(CX86_CCR4, ccr4 | 0x80); /* enable
> > cpuid */
> > - setCx86(CX86_CCR3, ccr3); /* disable
> > MAPEN */
> > + setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /*
> > enable MAPEN */
> > + setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x80); /*
> > enable cpuid */
> > + setCx86(CX86_CCR3, ccr3); /*
> > disable MAPEN */
> > local_irq_restore(flags);
> > }
> > }
>
> --
> Len Sorensen
>
-
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