On Wed, 18 Mar 2020 at 07:26, Andy Duan <fugang.duan@xxxxxxx> wrote:
>
> From: Martin Fuzzey <martin.fuzzey@flowbird.group> Sent: Wednesday, March 18, 2020 12:50 AM
> > +static int fec_enet_of_parse_stop_mode(struct fec_enet_private *fep,
> > + struct device_node *np) {
> > + static const char prop[] = "fsl,stop-mode";
> > + struct of_phandle_args args;
> > + int ret;
> > +
> > + ret = of_parse_phandle_with_fixed_args(np, prop, 2, 0, &args);
> To save memory:
>
> ret = of_parse_phandle_with_fixed_args(np, "fsl,stop-mode", 2, 0, &args);
>
Why would this save memory?
prop is defined static const char[] (and not char *) so there will no
be extra pointers.
I haven't checked the generated assembler but this should generate the
same code as a string litteral I think.
It is also reused later in the function in a debug (which is the
reason I did it this way to ensure the property name is unique and
consistent.
Regards,
Martin
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