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| author | Andrew Jackson <Andrew.Jackson@arm.com> | 2014-11-07 14:14:35 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-07 08:35:55 -0800 |
| commit | 4c0be45b18a3bd5c215589c4b320648e35024f6e (patch) | |
| tree | cfd8fe7e4df7a899f79c0b135ed7f5a9b8241240 | |
| parent | 144c29ed5fa361b890523358d791e6481d55e5a6 (diff) | |
| download | linux-4c0be45b18a3bd5c215589c4b320648e35024f6e.tar.gz linux-4c0be45b18a3bd5c215589c4b320648e35024f6e.tar.bz2 linux-4c0be45b18a3bd5c215589c4b320648e35024f6e.zip | |
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>
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 2 |
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; |