[13/22] spi: atmel: Don't use GFP_DMA when calling dma_alloc_coherent()

Commit Message

Baoquan He Feb. 19, 2022, 12:52 a.m. UTC

dma_alloc_coherent() allocates dma buffer with device's addressing
limitation in mind. It's redundent to specify GFP_DMA when calling
dma_alloc_coherent().

[ [e-mail]: Update changelog ]

Signed-off-by: Baoquan He <[e-mail]>
Acked-by: Hyeonggon Yoo <[e-mail]>
---
 drivers/spi/spi-atmel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Christoph Hellwig Feb. 19, 2022, 7:10 a.m. UTC | #1

On Sat, Feb 19, 2022 at 08:52:12AM +0800, Baoquan He wrote:
> dma_alloc_coherent() allocates dma buffer with device's addressing
> limitation in mind. It's redundent to specify GFP_DMA when calling
> dma_alloc_coherent().

Looks good:

Reviewed-by: Christoph Hellwig <[e-mail]>

Patch

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 9e300a932699..271dacf3b7d2 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1516,14 +1516,14 @@  static int atmel_spi_probe(struct platform_device *pdev)
 		as->addr_rx_bbuf = dma_alloc_coherent(&pdev->dev,
 						      SPI_MAX_DMA_XFER,
 						      &as->dma_addr_rx_bbuf,
-						      GFP_KERNEL | GFP_DMA);
+						      GFP_KERNEL);
 		if (!as->addr_rx_bbuf) {
 			as->use_dma = false;
 		} else {
 			as->addr_tx_bbuf = dma_alloc_coherent(&pdev->dev,
 					SPI_MAX_DMA_XFER,
 					&as->dma_addr_tx_bbuf,
-					GFP_KERNEL | GFP_DMA);
+					GFP_KERNEL);
 			if (!as->addr_tx_bbuf) {
 				as->use_dma = false;
 				dma_free_coherent(&pdev->dev, SPI_MAX_DMA_XFER,