On Tue, Jun 16, 2020 at 4:30 AM Maulik Shah <mks...@codeaurora.org> wrote:
>
> Hi,
>
> On 6/16/2020 11:43 AM, John Stultz wrote:
> > Allows qcom-pdc driver to be loaded as a permenent module
>
> typo: permanent
>
> > Also, due to the fact that IRQCHIP_DECLARE becomes a no-op when
> > building as a module, we have to add the platform driver hooks
> > explicitly.
> >
> > Thanks to Saravana for his help on pointing out the
> > IRQCHIP_DECLARE issue and guidance on a solution.
> >
> > Cc: Andy Gross <agr...@kernel.org>
> > Cc: Bjorn Andersson <bjorn.anders...@linaro.org>
> > Cc: Joerg Roedel <j...@8bytes.org>
> > Cc: Thomas Gleixner <t...@linutronix.de>
> > Cc: Jason Cooper <ja...@lakedaemon.net>
> > Cc: Marc Zyngier <m...@kernel.org>
> > Cc: Linus Walleij <linus.wall...@linaro.org>
> > Cc: Lina Iyer <il...@codeaurora.org>
> > Cc: Saravana Kannan <sarava...@google.com>
> > Cc: Todd Kjos <tk...@google.com>
> > Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
> > Cc: linux-arm-...@vger.kernel.org
> > Cc: iommu@lists.linux-foundation.org
> > Cc: linux-g...@vger.kernel.org
> > Signed-off-by: John Stultz <john.stu...@linaro.org>
> > ---
> > drivers/irqchip/Kconfig | 2 +-
> > drivers/irqchip/qcom-pdc.c | 30 ++++++++++++++++++++++++++++++
> > 2 files changed, 31 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
> > index 29fead208cad..12765bed08f9 100644
> > --- a/drivers/irqchip/Kconfig
> > +++ b/drivers/irqchip/Kconfig
> > @@ -425,7 +425,7 @@ config GOLDFISH_PIC
> > for Goldfish based virtual platforms.
> >
> > config QCOM_PDC
> > - bool "QCOM PDC"
> > + tristate "QCOM PDC"
> > depends on ARCH_QCOM
> > select IRQ_DOMAIN_HIERARCHY
> > help
> > diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c
> > index 6ae9e1f0819d..98d74160afcd 100644
> > --- a/drivers/irqchip/qcom-pdc.c
> > +++ b/drivers/irqchip/qcom-pdc.c
> > @@ -11,7 +11,9 @@
> > #include <linux/irqdomain.h>
> > #include <linux/io.h>
> > #include <linux/kernel.h>
> > +#include <linux/module.h>
> > #include <linux/of.h>
> > +#include <linux/of_irq.h>
> please move this include in order after of_device.h
> > #include <linux/of_address.h>
> > #include <linux/of_device.h>
> > #include <linux/soc/qcom/irq.h>
> > @@ -430,4 +432,32 @@ static int qcom_pdc_init(struct device_node *node,
> > struct device_node *parent)
> > return ret;
> > }
> >
> > +#ifdef MODULE
> > +static int qcom_pdc_probe(struct platform_device *pdev)
> > +{
> > + struct device_node *np = pdev->dev.of_node;
> > + struct device_node *parent = of_irq_find_parent(np);
> > +
> > + return qcom_pdc_init(np, parent);
> > +}
> > +
> > +static const struct of_device_id qcom_pdc_match_table[] = {
> > + { .compatible = "qcom,pdc" },
> > + {}
> > +};
> > +MODULE_DEVICE_TABLE(of, qcom_pdc_match_table);
> > +
> > +static struct platform_driver qcom_pdc_driver = {
> > + .probe = qcom_pdc_probe,
> > + .driver = {
> > + .name = "qcom-pdc",
> > + .of_match_table = qcom_pdc_match_table,
>
> can you please set .suppress_bind_attrs = true,
>
> This is to prevent bind/unbind using sysfs. Once irqchip driver module
> is loaded, it shouldn't get unbind at runtime.
Thanks, I really appreciate the review! I've made these changes on my
side and they'll be included in v2.
thanks
-john
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