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tty/serial: at91: set ops in property init each time 

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leilei Zhao 2015-02-27 16:07:17 +08:00 committed by Greg Kroah-Hartman
parent 4a1e888867
commit 4d9628a148
1 changed files with 1 additions and 0 deletions
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drivers/tty/serial/atmel_serial.c
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@ -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);