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authorAndrew Jackson2014-11-07 14:14:35 +0000
committerGreg Kroah-Hartman2014-11-07 08:35:55 -0800
commit4c0be45b18a3bd5c215589c4b320648e35024f6e (patch)
treecfd8fe7e4df7a899f79c0b135ed7f5a9b8241240 /drivers/tty/serial
parent144c29ed5fa361b890523358d791e6481d55e5a6 (diff)
serial: pl011: Allocate TX DMA buffer from DMA capable memory
Allocating with __GFP_DMA avoids the need for bounce buffers Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
-rw-r--r--drivers/tty/serial/amba-pl011.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 83c8f721cdb2..8654049a70c0 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -988,7 +988,7 @@ static void pl011_dma_startup(struct uart_amba_port *uap)
if (!uap->dmatx.chan)
return;
- uap->dmatx.buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL);
+ uap->dmatx.buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL | __GFP_DMA);
if (!uap->dmatx.buf) {
dev_err(uap->port.dev, "no memory for DMA TX buffer\n");
uap->port.fifosize = uap->fifosize;