linux-kernel - [PATCH v2 0/5] tty/serial: at91: fix bugs when using multiple serials

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Date:	Fri, 27 Feb 2015 16:07:13 +0800
From:	Leilei Zhao <leilei.zhao@...el.com>
To:	<nicolas.ferre@...el.com>, <gregkh@...uxfoundation.org>,
	<linux-serial@...r.kernel.org>, <jslaby@...e.cz>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Leilei Zhao <leilei.zhao@...el.com>
Subject: [PATCH v2 0/5] tty/serial: at91: fix bugs when using multiple serials

The series of patches fix bugs when using multiple serial ports at the same time:
 - The using rx ring buffer in DMA is inconsistent with its allocation.
 - The serial port can't send and receive data when it's opened the second time
   and the later if it switches to PIO when DMA channel is not available.
 - The serial port can lead to kernel crash when data is sending and receiving
   and the program is killed.
 
The patches were made from branch tty-next of gregkh/tty.git repository, and 
tested on a SAMA5D36 VB boards with 5 serial ports enabled.

Changes from v1:
 - Use macro PAGE_ALIGNED to simplify the expression.

Leilei Zhao (5):
  tty/serial: at91: correct check of buf used in DMA
  tty/serial: at91: correct buffer size used in DMA
  tty/serial: at91: revise the return type of atmel_init_property
  tty/serial: at91: set ops in property init each time
  tty/serial: at91: correct the usage of tasklet

 drivers/tty/serial/atmel_serial.c |   18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

-- 
1.7.9.5

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