Re: [patch 9/9] Add bcm43xx HW RNG support

[Michael Buesch]

On Friday 12 May 2006 17:16, Denis Vlasenko wrote:
> On Friday 12 May 2006 13:35, Michael Buesch wrote:
> > +static int bcm43xx_rng_read(struct hwrng *rng, u32 *data)
> > +{
> > +	struct bcm43xx_private *bcm = (struct bcm43xx_private *)rng->priv;
> > +	unsigned long flags;
> > +
> > +	bcm43xx_lock(bcm, flags);
> > +	*data = bcm43xx_read16(bcm, BCM43xx_MMIO_RNG);
> 
> You are storing random 16-bit value _and_ 16 zero bits
> into 32-bit memory location. Probably not a problem for
> little-endian machine (you return 2, indicating that there
> are only 2 bytes of randomness), but on big endian?
> 
> Didn't you mean
> 
> 	*(u16*)data = bcm43xx_read16(bcm, BCM43xx_MMIO_RNG); ?


Nope, the code is correct.

-- 
Greetings Michael.
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