On Tue, Sep 09, 2014 at 02:37:42PM -0500, Timur Tabi wrote:
> On 09/09/2014 01:38 PM, Nicolin Chen wrote:
> >make sure to have the call for imx only because it seems that
> >the other platforms do not depend on the clock.
>
> Although I doubt anyone will every add support for clocks to PowerPC "side"
> of this driver, I would prefer to avoid IMX-specific changes. Instead, the
> code should check if a clock is available. That's why I suggested this
> change:
>
> - if (ssi_private->soc->imx)
> + if (!IS_ERR(ssi_private->clk))
Hmm.... I think the following change may be better?
probe() {
....
+ /*
+ * Initially mark the clock to NULL for all platforms so that later
+ * clk_prepare_enable() will ignore and return 0 for non-clock cases.
+ */
+ ssi_private->clk = NULL;
.....
fsl_ssi_imx_probe();
}
In this way, all platforms, not confined to imx any more, will be able
to call clk_prepare_enable(). Then we don't need an extra platform check
before calling it.
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