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tty/serial: at91: correct buffer size used in DMA 

The buffer size set in DMA is inconsistent with its allocation.
So keep them consistent here. The structure atmel_uart_char is
used in PIO mode with its meaning. But here in DMA, all of the
buffer is treated as general char.

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 16:07:15 +08:00 committed by Greg Kroah-Hartman
parent 2c27705410
commit a510880f6e
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/atmel_serial.c
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@ -1030,7 +1030,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
BUG_ON(!PAGE_ALIGNED(ring->buf));
sg_set_page(&atmel_port->sg_rx,
virt_to_page(ring->buf),
ATMEL_SERIAL_RINGSIZE,
sizeof(struct atmel_uart_char) * ATMEL_SERIAL_RINGSIZE,
(int)ring->buf & ~PAGE_MASK);
nent = dma_map_sg(port->dev,
&atmel_port->sg_rx,