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From: Leilei Zhao <leilei.zhao@atmel.com>
To: <nicolas.ferre@atmel.com>, <gregkh@linuxfoundation.org>,
	<linux-serial@vger.kernel.org>, <jslaby@suse.cz>
Cc: <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Leilei Zhao <leilei.zhao@atmel.com>
Subject: [PATCH 0/5] tty/serial: at91: fix bugs when using multiple serials
Date: Thu, 26 Feb 2015 14:55:20 +0800	[thread overview]
Message-ID: <1424933725-16242-1-git-send-email-leilei.zhao@atmel.com> (raw)

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.

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 |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

-- 
1.7.9.5


             reply	other threads:[~2015-02-26  7:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-26  6:55 Leilei Zhao [this message]
2015-02-26  6:55 ` [PATCH 1/5] tty/serial: at91: correct check of buf used in DMA Leilei Zhao
2015-02-26  9:29   ` Jiri Slaby
2015-02-27  7:38     ` Zhao, Leilei
2015-02-26  6:55 ` [PATCH 2/5] tty/serial: at91: correct buffer size " Leilei Zhao
2015-02-26  6:55 ` [PATCH 3/5] tty/serial: at91: revise the return type of atmel_init_property Leilei Zhao
2015-02-26  6:55 ` [PATCH 4/5] tty/serial: at91: set ops in property init each time Leilei Zhao
2015-02-26  6:55 ` [PATCH 5/5] tty/serial: at91: correct the usage of tasklet Leilei Zhao

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