linux-kernel - Re: [Patch net] net: dsa: microchip: remove IRQF_TRIGGER_FALLING in request_threaded

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Message-ID: <0d35858867ae1c3de899d6162aa39e013daff435.camel@redhat.com>
Date:   Thu, 15 Dec 2022 12:29:22 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Arun Ramadoss <arun.ramadoss@...rochip.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     woojung.huh@...rochip.com, UNGLinuxDriver@...rochip.com,
        andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, linux@...linux.org.uk, Tristram.Ha@...rochip.com,
        ceggers@...i.de
Subject: Re: [Patch net] net: dsa: microchip: remove IRQF_TRIGGER_FALLING in
 request_threaded_irq

On Tue, 2022-12-13 at 15:44 +0530, Arun Ramadoss wrote:
> KSZ swithes used interrupts for detecting the phy link up and down.
> During registering the interrupt handler, it used IRQF_TRIGGER_FALLING
> flag. But this flag has to be retrieved from device tree instead of hard
> coding in the driver, 

Out of sheer ignorance, why?

> so removing the flag.

It looks like the device tree currently lack such item, so this is
effecivelly breaking phy linkup/linkdown?

What am I missing?

Thanks!

Paolo