linux-kernel - Re: [PATCH] tty: serial: msm_serial: Don't require DT aliases

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Message-ID: <CAMAWPa8m5Ey6ee8tK8n8g7T6XL7=ZfLzrQgbW9-2iPVWnUfigw@mail.gmail.com>
Date:	Thu, 20 Nov 2014 07:10:35 -0800
From:	Kevin Hilman <khilman@...nel.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Frank Rowand <frowand.list@...il.com>,
	linux-serial@...r.kernel.org, Olof Johansson <olof@...om.net>,
	Arnd Bergmann <arnd@...db.de>,
	Tyler Baker <tyler.baker@...aro.org>,
	Kevin Hilman <khilman@...nel.org>
Subject: Re: [PATCH] tty: serial: msm_serial: Don't require DT aliases

Greg,

On Fri, Nov 14, 2014 at 10:39 AM, Stephen Boyd <sboyd@...eaurora.org> wrote:
> If there isn't a DT alias then of_alias_get_id() will return
> -ENODEV. This will cause the msm_serial driver to fail probe,
> when we want to keep the previous behavior where we generated a
> dynamic line number at probe time. Restore this behavior by
> generating a dynamic id if the line number is still negative
> after checking for an alias or in the non-DT case looking at the
> .id field of the platform device.
>
> Reported-by: Kevin Hilman <khilman@...nel.org>
> Tested-by: Kevin Hilman <khilman@...aro.org>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>

Can you add this to tty-next.  Without this, all the ARM/qcom boards
do not boot in linux-next.

Thanks,

Kevin
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