linux-kernel - Re: [PATCH] PCI: altera-msi: Allow building as module

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Message-ID: <20190515135933.GB30985@e121166-lin.cambridge.arm.com>
Date:   Wed, 15 May 2019 14:59:33 +0100
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Ley Foon Tan <lftan.linux@...il.com>
Cc:     Ley Foon Tan <ley.foon.tan@...el.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-kernel@...r.kernel.org,
        linux-pci <linux-pci@...r.kernel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH] PCI: altera-msi: Allow building as module

On Tue, May 14, 2019 at 01:35:20PM +0800, Ley Foon Tan wrote:
> On Wed, Apr 24, 2019 at 12:57 PM Ley Foon Tan <ley.foon.tan@...el.com> wrote:
> >
> > Altera MSI IP is a soft IP and is only available after
> > FPGA image is programmed.
> >
> > Make driver modulable to support use case FPGA image is programmed
> > after kernel is booted. User proram FPGA image in kernel then only load
> > MSI driver module.
> >
> > Signed-off-by: Ley Foon Tan <ley.foon.tan@...el.com>
> > ---
> >  drivers/pci/controller/Kconfig           |  2 +-
> >  drivers/pci/controller/pcie-altera-msi.c | 10 ++++++++++
> >  2 files changed, 11 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> > index 4b550f9cdd56..920546cb84e2 100644
> > --- a/drivers/pci/controller/Kconfig
> > +++ b/drivers/pci/controller/Kconfig
> > @@ -181,7 +181,7 @@ config PCIE_ALTERA
> >           FPGA.
> >
> >  config PCIE_ALTERA_MSI
> > -       bool "Altera PCIe MSI feature"
> > +       tristate "Altera PCIe MSI feature"
> >         depends on PCIE_ALTERA
> >         depends on PCI_MSI_IRQ_DOMAIN
> >         help
> > diff --git a/drivers/pci/controller/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
> > index 025ef7d9a046..16d938920ca5 100644
> > --- a/drivers/pci/controller/pcie-altera-msi.c
> > +++ b/drivers/pci/controller/pcie-altera-msi.c
> > @@ -10,6 +10,7 @@
> >  #include <linux/interrupt.h>
> >  #include <linux/irqchip/chained_irq.h>
> >  #include <linux/init.h>
> > +#include <linux/module.h>
> >  #include <linux/msi.h>
> >  #include <linux/of_address.h>
> >  #include <linux/of_irq.h>
> > @@ -288,4 +289,13 @@ static int __init altera_msi_init(void)
> >  {
> >         return platform_driver_register(&altera_msi_driver);
> >  }
> > +
> > +static void __exit altera_msi_exit(void)
> > +{
> > +       platform_driver_unregister(&altera_msi_driver);
> > +}
> > +
> >  subsys_initcall(altera_msi_init);
> > +MODULE_DEVICE_TABLE(of, altera_msi_of_match);
> > +module_exit(altera_msi_exit);
> > +MODULE_LICENSE("GPL v2");
> > --
> > 2.19.0
> >
> Hi
> 
> Any comment for this patch?

I will get to these patches for the next merge window, thanks.

Lorenzo