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From: Greg KH <gregkh@linuxfoundation.org>
To: Marc Zyngier <maz@kernel.org>
Cc: John Garry <john.garry@huawei.com>,
	jejb@linux.ibm.com, martin.petersen@oracle.com, lenb@kernel.org,
	rjw@rjwysocki.net, tglx@linutronix.de,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linuxarm@huawei.com, linux-acpi@vger.kernel.org, dwagner@suse.de
Subject: Re: [PATCH v5 4/5] Driver core: platform: Add devm_platform_get_irqs_affinity()
Date: Thu, 10 Dec 2020 16:29:31 +0100	[thread overview]
Message-ID: <X9I+2ydy8VDOaiec@kroah.com> (raw)
In-Reply-To: <ed238cc6e4a6b865b2dc965f52fe0550@kernel.org>

On Wed, Dec 09, 2020 at 07:39:03PM +0000, Marc Zyngier wrote:
> On 2020-12-09 19:13, Greg KH wrote:
> > On Wed, Dec 09, 2020 at 07:04:02PM +0000, John Garry wrote:
> > > On 09/12/2020 18:32, Greg KH wrote:
> > > > On Wed, Dec 02, 2020 at 06:36:56PM +0800, John Garry wrote:
> > > > > Drivers for multi-queue platform devices may also want managed interrupts
> > > > > for handling HW queue completion interrupts, so add support.
> > > >
> > > 
> > > Hi Greg,
> > > 
> > > > Why would a platform device want all of this?  Shouldn't such a device
> > > > be on a "real" bus instead?
> > > 
> > > For this HW version, the device is on the system bus, directly
> > > addressable
> > > by the CPU.
> > 
> > What do you mean by "system bus"?
> > 
> > > Motivation is that I wanted to switch the HW completion queues to use
> > > managed interrupts.
> > 
> > Fair enough, seems like overkill for a "platform" bus though :)
> 
> You should see the box, really... ;-)

{sigh} why do hardware engineers ignore sane busses...

Anyway, if you all are going to maintain this, no objection from me, it
should go through the irq tree.

thanks,

greg k-h

  parent reply	other threads:[~2020-12-10 15:29 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-02 10:36 [PATCH v5 0/5] Support managed interrupts for platform devices John Garry
2020-12-02 10:36 ` [PATCH v5 1/5] genirq/affinity: Add irq_update_affinity_desc() John Garry
2020-12-11 14:58   ` [irqchip: irq/irqchip-next] " irqchip-bot for John Garry
2020-12-02 10:36 ` [PATCH v5 2/5] resource: Add irqresource_disabled() John Garry
2020-12-11 14:58   ` [irqchip: irq/irqchip-next] " irqchip-bot for John Garry
2020-12-02 10:36 ` [PATCH v5 3/5] ACPI: Drop acpi_dev_irqresource_disabled() John Garry
2020-12-11 14:58   ` [irqchip: irq/irqchip-next] " irqchip-bot for John Garry
2020-12-02 10:36 ` [PATCH v5 4/5] Driver core: platform: Add devm_platform_get_irqs_affinity() John Garry
2020-12-09 18:32   ` Greg KH
2020-12-09 19:04     ` John Garry
2020-12-09 19:13       ` Greg KH
2020-12-09 19:36         ` John Garry
2020-12-09 19:39         ` Marc Zyngier
2020-12-10 10:10           ` John Garry
2020-12-10 15:29           ` Greg KH [this message]
2020-12-10 16:37             ` John Garry
2020-12-11 14:58   ` [irqchip: irq/irqchip-next] driver " irqchip-bot for John Garry
2020-12-02 10:36 ` [PATCH v5 5/5] scsi: hisi_sas: Expose HW queues for v2 hw John Garry
2020-12-11 16:56   ` John Garry
2020-12-11 17:20     ` Martin K. Petersen
2020-12-11 17:33       ` John Garry
2020-12-11 15:01 ` [PATCH v5 0/5] Support managed interrupts for platform devices Marc Zyngier

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