linux-kernel - Re: [PATCH 1/1] hso: fix problem with wrong status code sent by OPTION GTM601 during RING indication

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Message-Id: <4893FFB3-2A82-4AD4-A6B6-20270798051F@goldelico.com>
Date:	Fri, 4 Oct 2013 08:22:37 +0200
From:	"Dr. H. Nikolaus Schaller" <hns@...delico.com>
To:	David Miller <davem@...emloft.net>
Cc:	j.dumon@...ion.com, marek.belisko@...il.com,
	linux-usb@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] hso: fix problem with wrong status code sent by OPTION GTM601 during RING indication


Am 03.10.2013 um 22:00 schrieb David Miller:

> From: "Dr. H. Nikolaus Schaller" <hns@...delico.com>
> Date: Thu, 3 Oct 2013 21:40:34 +0200
> 
>> I have made the bug observation from debug log that this bit is set in a response
>> each time the modem has a RING message. It might be specific to this modem
>> and firmware version, i.e. a firmware bug. But we have no means to verify or even
>> change it in the firmware.
>> 
>> I.e. the driver must handle it in a better way.
>> 
>> Because the notification is rejected by the driver, the driver will hang up and the
>> whole modem connection breaks down.
>> 
>> With this patch, the problem was never observed again in ~2 years.
>> 
>> I'd hope the maintainer of this driver can shed some light on it.
> 
> I think if you suspect the bit is set in response to RING messages
> then you should define a macro so that the number is not just magic,
> and put a descriptrive comment above the macro definition for that
> bit.

Good idea! I will resend the patch.

--- hns--
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