Re: [PATCH] TXx9: Add TX4939 RNG support

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: This is a reply for comments from Matt Mackall via mm-commit mail.

On Fri, 29 May 2009 19:21:22 -0500, Matt Mackall <mpm@xxxxxxxxxxx> wrote:
> > +++ a/arch/mips/txx9/generic/setup_tx4939.c
> > @@ -494,6 +494,24 @@ void __init tx4939_aclc_init(void)
> >  			       TXX9_IRQ_BASE + TX4939_IR_ACLC, 1, 0, 1);
> >  }
> >  
> > +#define TX4939_RNG_REG	((TX4939_CRYPTO_REG & 0xfffffffffULL) + 0xb0)
> 
> This isn't the best place for this define?

Well, I can move it to include/asm/txx9/tx4939.h.

> > +++ a/arch/mips/txx9/rbtx4939/setup.c
> > @@ -501,6 +501,7 @@ static void __init rbtx4939_device_init(
> >  	tx4939_dmac_init(0, 2);
> >  	tx4939_aclc_init();
> >  	platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
> > +	tx4939_rng_init();
> >  }
> >  
> >  static void __init rbtx4939_setup(void)
> 
> Not clear to me how this works when this is a module?

This patch add a registration of a platform device for RNG to vmlinux.
And the other patch add a driver module for the RNG.  This strategy is
fairly common for SoCs or embedded platforms.

---
Atsushi Nemoto


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