linux-kernel - RE: [PATCH v4] cdx: add MSI support for CDX bus

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Message-ID: <DM4PR12MB7765E0AE903633FD575E1A518FD6A@DM4PR12MB7765.namprd12.prod.outlook.com>
Date:   Tue, 17 Oct 2023 11:24:33 +0000
From:   "Gangurde, Abhijit" <abhijit.gangurde@....com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "maz@...nel.org" <maz@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "jgg@...pe.ca" <jgg@...pe.ca>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "git (AMD-Xilinx)" <git@....com>,
        "Anand, Harpreet" <harpreet.anand@....com>,
        "Jansen Van Vuuren, Pieter" <pieter.jansen-van-vuuren@....com>,
        "Agarwal, Nikhil" <nikhil.agarwal@....com>,
        "Simek, Michal" <michal.simek@....com>,
        "srivatsa@...il.mit.edu" <srivatsa@...il.mit.edu>,
        "Gupta, Nipun" <Nipun.Gupta@....com>
Subject: RE: [PATCH v4] cdx: add MSI support for CDX bus

> > +}
> > +
> > +static struct irq_chip cdx_msi_irq_chip = {
> > +	.name			= "CDX-MSI",
> > +	.irq_mask		= irq_chip_mask_parent,
> > +	.irq_unmask		= irq_chip_unmask_parent,
> > +	.irq_eoi		= irq_chip_eoi_parent,
> > +	.irq_set_affinity	= msi_domain_set_affinity,
> > +	.irq_write_msi_msg	= cdx_msi_write_msg,
> > +	.irq_bus_lock		= cdx_msi_write_irq_lock,
> > +	.irq_bus_sync_unlock	= cdx_msi_write_irq_unlock
> > +};
> > +
> > +int cdx_msi_domain_alloc_irqs(struct device *dev, unsigned int irq_count)
> > +{
> > +	int ret;
> > +
> > +	ret = msi_setup_device_data(dev);
> > +	if (ret)
> > +		return ret;
> > +
> > +	ret = msi_domain_alloc_irqs_range(dev, MSI_DEFAULT_DOMAIN,
> > +					  0, irq_count - 1);
> > +	if (ret)
> > +		dev_err(dev, "Failed to allocate IRQs: %d\n", ret);
> > +
> > +	return ret;
> > +}
> > +EXPORT_SYMBOL_GPL(cdx_msi_domain_alloc_irqs);
> 
> meta-comment, CDX really should have a module namespace one of these
> days, right?
> 

Will include the module namespace change in other cdx patch series.

Thanks,
Abhijit