linux-kernel - [PATCH 0/2] serial: Move uart_register

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Message-Id: <1390208555-27770-1-git-send-email-tushar.behera@linaro.org>
Date:	Mon, 20 Jan 2014 14:32:33 +0530
From:	Tushar Behera <tushar.behera@...aro.org>
To:	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org
Cc:	jslaby@...e.cz, gregkh@...uxfoundation.org, linux@....linux.org.uk,
	ben.dooks@...ethink.co.uk, broonie@...nel.org
Subject: [PATCH 0/2] serial: Move uart_register_driver call to device probe

In a multiplatform scenario, it is possible that multiple serial
drivers are part of the kernel. Currently the driver registration fails
if multiple serial drivers with same default major/minor numbers are
included in the kernel. A typical case is observed with amba-pl011 and
samsung-uart drivers.

This is the 3rd iteration to fix above problem.

Iteration 1:
[PATCH] serial: samsung: Remove hard-coded major/minor numbers
https://lkml.org/lkml/2013/12/27/2

Iteration 2:
[PATCH] tty: Fallback to use dynamic major number
https://lkml.org/lkml/2014/1/16/2

Both these approaches were rejected because they were breaking userspace
interface.

Iteration 3:
uart_register_driver call binds the driver to a specific device
node through tty_driver_register call. This is moved to device probe call.

Tushar Behera (2):
  serial: samsung: Move uart_register_driver call to device probe
  serial: pl011: Move uart_register_driver call to device probe

 drivers/tty/serial/amba-pl011.c |   21 +++++++++++---------
 drivers/tty/serial/samsung.c    |   40 +++++++++++----------------------------
 2 files changed, 23 insertions(+), 38 deletions(-)

-- 
1.7.9.5

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