summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLeilei Zhao <leilei.zhao@atmel.com>2015-02-27 16:07:15 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-07 03:51:47 +0100
commita510880f6ea00ee28f22ec61a3c53357bb1bbaa5 (patch)
tree50f54a593b892efbd1e5ad5496f73f21ab80d7eb
parent2c2770541040318fa6ac0ac4424d8af6dd0709bf (diff)
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>
-rw-r--r--drivers/tty/serial/atmel_serial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 1a1d255baab5..6b70ec6d1704 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -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,