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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 4/5] tty/serial: at91: set ops in property init each time
Date: Thu, 26 Feb 2015 14:55:24 +0800	[thread overview]
Message-ID: <1424933725-16242-5-git-send-email-leilei.zhao@atmel.com> (raw)
In-Reply-To: <1424933725-16242-1-git-send-email-leilei.zhao@atmel.com>

The property in device tree will be reading each time when tty is opened,
so the ops of serial port should be set after that instead of setting once
in probe. Otherwise, the ops of serial port is inconsistent with the state
of serial work manner. For example, the atmel serial driver can't work when
switching to PIO mode due to DMA channel is not available.

Signed-off-by: Leilei Zhao <leilei.zhao@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
---
 drivers/tty/serial/atmel_serial.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 30a62cd..8d28210 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1759,6 +1759,7 @@ static int atmel_startup(struct uart_port *port)
 	 * Initialize DMA (if necessary)
 	 */
 	atmel_init_property(atmel_port, pdev);
+	atmel_set_ops(port);
 
 	if (atmel_port->prepare_rx) {
 		retval = atmel_port->prepare_rx(port);
-- 
1.7.9.5


  parent reply	other threads:[~2015-02-26  7:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-26  6:55 [PATCH 0/5] tty/serial: at91: fix bugs when using multiple serials Leilei Zhao
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 ` Leilei Zhao [this message]
2015-02-26  6:55 ` [PATCH 5/5] tty/serial: at91: correct the usage of tasklet Leilei Zhao

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