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SubjectRe: [PATCH 2/4] fsl_pmc: Add API to enable device as wakeup event source
On Sat, Aug 11, 2012 at 08:19:43AM -0500, Tabi Timur-B04825 wrote:
> On Tue, Aug 7, 2012 at 3:43 AM, Zhao Chenhui <chenhui.zhao@freescale.com> wrote:
>
> > +int mpc85xx_pmc_set_wake(struct device *dev, bool enable)
> > +{
> > + int ret = 0;
> > + struct device_node *clk_np;
> > + const u32 *prop;
> > + u32 pmcdr_mask;
> > +
> > + if (!pmc_regs) {
> > + pr_err("%s: PMC is unavailable\n", __func__);
>
> You have a 'struct device', so please use dev_err instead.
>
> > + return -ENODEV;
> > + }
> > +
> > + if (enable && !device_may_wakeup(dev))
> > + return -EINVAL;
> > +
> > + clk_np = of_parse_phandle(dev->of_node, "fsl,pmc-handle", 0);
> > + if (!clk_np)
> > + return -EINVAL;
> > +
> > + prop = of_get_property(clk_np, "fsl,pmcdr-mask", NULL);
> > + if (!prop) {
> > + ret = -EINVAL;
> > + goto out;
> > + }
> > + pmcdr_mask = be32_to_cpup(prop);
> > +
> > + if (enable)
> > + /* clear to enable clock in low power mode */
> > + clrbits32(&pmc_regs->pmcdr, pmcdr_mask);
> > + else
> > + setbits32(&pmc_regs->pmcdr, pmcdr_mask);
> > +
> > +out:
> > + of_node_put(clk_np);
> > + return ret;
> > +}
> > +EXPORT_SYMBOL_GPL(mpc85xx_pmc_set_wake);
>
> Use EXPORT_SYMBOL, not EXPORT_SYMBOL_GPL.
>
> > +
> > +/**
> > + * mpc85xx_pmc_set_lossless_ethernet - enable lossless ethernet
> > + * in (deep) sleep mode
> > + * @enable: True to enable event generation; false to disable
> > + */
> > +void mpc85xx_pmc_set_lossless_ethernet(int enable)
>
> Should this be 'bool enable'?
>
> > @@ -21,6 +22,17 @@ struct device_node;
> >
> > extern void fsl_rstcr_restart(char *cmd);
> >
> > +#ifdef CONFIG_FSL_PMC
> > +extern int mpc85xx_pmc_set_wake(struct device *dev, bool enable);
> > +extern void mpc85xx_pmc_set_lossless_ethernet(int enable);
>
> Don't use 'extern' for functions.
>

Why? I think there is no difference.

-Chenhui



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