linux-kernel - Re: [PATCH v1] serial: sc16is7xx: Extend IRQ check for negative valus

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Message-ID: <834d7b6e-27a4-41e9-b36b-2bcbd0504bd5@kernel.org>
Date: Thu, 16 Jan 2025 11:02:23 +0100
From: Jiri Slaby <jirislaby@...nel.org>
To: Andy Shevchenko <andy@...nel.org>
Cc: Andre Werner <andre.werner@...tec-electronic.com>,
 gregkh@...uxfoundation.org, hvilleneuve@...onoff.com,
 linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
 lech.perczak@...lingroup.com
Subject: Re: [PATCH v1] serial: sc16is7xx: Extend IRQ check for negative valus

On 16. 01. 25, 10:53, Andy Shevchenko wrote:
> On Thu, Jan 16, 2025 at 10:42:14AM +0100, Jiri Slaby wrote:
>> This is threaded weirdly.
> 
> Yeah, new patch (version) — new email thread.
> 
>> On 16. 01. 25, 10:32, Andre Werner wrote:
>>> Fix the IRQ check to treat the negative values as No IRQ.
>>
>> Care to describe on what HW that can happen?
> 
> But how does this relevant? The whole idea is that neither I²C nor SPI
> frameworks do not guarantee the IRQ field never be negative. This is
> the fix to the previously submitted patch.

They do AFAICS. Could you be more specific?

-- 
js
suse labs