linux-kernel - Re: [PATCH 00/11] ARM: dts: mvebu: Add definitions for PCIe legacy INTx interrupts

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Date:   Thu, 7 Jul 2022 16:38:18 +0200
From:   Marek Behún <kabel@...nel.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Pali Rohár <pali@...nel.org>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/11] ARM: dts: mvebu: Add definitions for PCIe legacy
 INTx interrupts

On Wed, 6 Jul 2022 22:53:46 +0200
Andrew Lunn <andrew@...n.ch> wrote:

> On Wed, Jul 06, 2022 at 08:31:03PM +0200, Pali Rohár wrote:
> > This patch series add definitions for PCIe legacy INTx interrupts into
> > every DTS file used by the pci-mvebu.c controller driver.  
> 
> What you fail to explain in the commit message is Why?
> 
>      Andrew

Hi Andrew,

this is required for example in a scenario where a driver requests only
one of the legacy interrupts (INTA). Without this change, the driver
would be notified on events on all 4 (INTA, INTB, INTC, INTD), even if
it requested only one of them.

Marek