[PATCH 06/10] drivers/usb: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN

Catalin Marinas
2022-04-05T14:01:26Z

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/buffer.c | 8 ++++----
drivers/usb/misc/usbtest.c | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index fbb087b728dc..e21d8d106977 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -34,13 +34,13 @@ void __init usb_init_pool_max(void)
{
/*
* The pool_max values must never be smaller than
- * ARCH_KMALLOC_MINALIGN.
+ * ARCH_DMA_MINALIGN.
*/
- if (ARCH_KMALLOC_MINALIGN <= 32)
+ if (ARCH_DMA_MINALIGN <= 32)
; /* Original value is okay */
- else if (ARCH_KMALLOC_MINALIGN <= 64)
+ else if (ARCH_DMA_MINALIGN <= 64)
pool_max[0] = 64;
- else if (ARCH_KMALLOC_MINALIGN <= 128)
+ else if (ARCH_DMA_MINALIGN <= 128)
pool_max[0] = 0; /* Don't use this pool */
else
BUILD_BUG(); /* We don't allow this */
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 150090ee4ec1..e13f7f6904ff 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -378,7 +378,7 @@ static void simple_fill_buf(struct urb *urb)

static inline unsigned long buffer_offset(void *buf)
{
- return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
+ return (unsigned long)buf & (ARCH_DMA_MINALIGN - 1);
}

static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)