linux-kernel - Re: [PATCH] serial: 8250_omap: Implementation of Errata i2310

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Message-ID: <4220a910-b64a-4212-8d29-a4dbedfba735@ti.com>
Date: Fri, 14 Jun 2024 13:52:59 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Greg KH <gregkh@...uxfoundation.org>, Udit Kumar <u-kumar1@...com>
CC: <nm@...com>, <tony@...mide.com>, <jirislaby@...nel.org>,
        <u.kleine-koenig@...gutronix.de>, <ronald.wahl@...itan.com>,
        <thomas.richard@...tlin.com>, <tglx@...utronix.de>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>
Subject: Re: [PATCH] serial: 8250_omap: Implementation of Errata i2310



On 14/06/24 12:16, Greg KH wrote:
> On Fri, Jun 14, 2024 at 11:43:14AM +0530, Udit Kumar wrote:
>> As per Errata i2310[0], Erroneous timeout can be triggered,
>> if this Erroneous interrupt is not cleared then it may leads
>> to strom of interrupts, therefore apply Errata i2310 solution.
>>

s/strom/storm

>> [0] https://www.ti.com/lit/pdf/sprz536 page 23
>>
>> Signed-off-by: Udit Kumar <u-kumar1@...com>
>> ---
>>  drivers/tty/serial/8250/8250_omap.c | 25 ++++++++++++++++++++-----
>>  1 file changed, 20 insertions(+), 5 deletions(-)
> 
> Does this need to go to older/stable kernels?  If so, how far back?
> 

Yes, this seems to be an updated workaround to existing errata.
Please add below Fixes tag when you respin

Fixes: b67e830d38fa ("serial: 8250: 8250_omap: Fix possible interrupt storm on K3 SoCs")


> thanks,
> 
> greg k-h

-- 
Regards
Vignesh