Re: [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core

[Vitaly Wool]

David Brownell wrote:

> On Tuesday 13 December 2005 2:15 pm, Vitaly Wool wrote:
>
>  
>
> > Take for instance spi_w8r8 function used in lotsa places in the drivers 
> > you and Stephen have posted.
> > This function has a) *implicit memcpy* inherited from 
> > spi_write_then_read b) *implicit priority inversion* inherited from the 
> > same place.
> >    
>
> No, (a) is explicit, along with comments not to use that family of
> calls when such things matter more than the convenience of those
> RPC-ish calls.  And (b) was fixed a small patch, now merged.
>  
Hmm. Why not use a) when it's convenient? You're placing an artificial 
requirement then.
Yep, saw patch for b). One more kmalloc introduces which can be avoided 
easily with my patch ;)

Vitaly
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/