On Thu, 25 Apr 2013, Will Deacon wrote:
> On Wed, Apr 24, 2013 at 07:40:19PM +0100, Stefano Stabellini wrote:
> > From: Jon Medhurst <t...@linaro.org>
> >
> > Add a new 'smp_init' hook to machine_desc so platforms can specify a
> > function to be used to setup smp ops instead of having a statically
> > defined value. The hook must return true when smp_ops are initialized.
> > If false the static mdesc->smp_ops will be used by default.
> >
> > Signed-off-by: Jon Medhurst <t...@linaro.org>
> > Signed-off-by: Nicolas Pitre <nicolas.pi...@linaro.org>
> > Signed-off-by: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
> > Reviewed-by: Santosh Shilimkar <santosh.shilim...@ti.com>
> > ---
> > arch/arm/include/asm/mach/arch.h | 4 ++++
> > arch/arm/kernel/setup.c | 10 ++++++----
> > 2 files changed, 10 insertions(+), 4 deletions(-)
>
> [...]
>
> > if (is_smp()) {
> > - if (psci_smp_available())
> > - smp_set_ops(&psci_smp_ops);
> > - else if (mdesc->smp)
> > - smp_set_ops(mdesc->smp);
> > + if (!mdesc->smp_init || !mdesc->smp_init()) {
>
> Minor nit, but this feels backwards to me. We usually return 0 on success,
> yet we're saying here that if mdesc->smp_init() returns 0, then we go and
> override the smp ops.
It doesn't return 0, but true or false. So, semantically, if ->smp_init
returns false, that means it didn't initialize anything.
Nicolas
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