diff mbox series

[05/10] drivers/spi: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN

Message ID 20220405135758.774016-6-catalin.marinas@arm.com (mailing list archive)
State New, archived
Headers show
Series mm, arm64: Reduce ARCH_KMALLOC_MINALIGN below the cache line size | expand

Commit Message

Catalin Marinas April 5, 2022, 1:57 p.m. UTC 
ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA
operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects
alignment.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Brown <broonie@kernel.org>
---
 drivers/spi/spidev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Mark Brown April 5, 2022, 2:05 p.m. UTC | #1 
On Tue, Apr 05, 2022 at 02:57:53PM +0100, Catalin Marinas wrote:
> ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA
> operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects
> alignment.

Acked-by: Mark Brown <broonie@kernel.org>
diff mbox series

Patch

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 53a551714265..4baea157949b 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -227,7 +227,7 @@  static int spidev_message(struct spidev_data *spidev,
 		/* Ensure that also following allocations from rx_buf/tx_buf will meet
 		 * DMA alignment requirements.
 		 */
-		unsigned int len_aligned = ALIGN(u_tmp->len, ARCH_KMALLOC_MINALIGN);
+		unsigned int len_aligned = ALIGN(u_tmp->len, ARCH_DMA_MINALIGN);
 
 		k_tmp->len = u_tmp->len;