[PATCH] spi: tegra: don't treat NULL clk as an error

[Russell King - ARM Linux]

On Mon, Jan 10, 2011 at 01:58:12PM -0700, Grant Likely wrote:
> On Mon, Jan 10, 2011 at 4:05 AM, Jamie Iles <jamie at jamieiles.com> wrote:
> > Some platforms have been known to return NULL from clk_get() if they
> > support only a single struct clk.  Whilst tegra doesn't do this, make
> > the drivers consistent with others.
> >
> > Cc: Erik Gilling <konkers at android.com>
> > Signed-off-by: Jamie Iles <jamie at jamieiles.com>
> 
> Hi James,
> 
> If NULL does get returned, say due to a future change to the clock
> code, then this change causes the driver to oops.  I'm not going to
> apply this patch.

Please apply it - the clock API just defines struct clk as a cookie
where errors are IS_ERR/PTR_ERR.  Other values must be considered by
drivers as perfectly valid, including NULL.