linux-kernel - [PATCH 03/10] drivers/gpu: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC

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Message-Id: <20220405135758.774016-4-catalin.marinas@arm.com>
Date:   Tue,  5 Apr 2022 14:57:51 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Daniel Vetter <daniel@...ll.ch>
Subject: [PATCH 03/10] drivers/gpu: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN

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@....com>
Cc: Daniel Vetter <daniel@...ll.ch>
---
 drivers/gpu/drm/drm_managed.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_managed.c b/drivers/gpu/drm/drm_managed.c
index 37d7db6223be..2d4c51f9d74e 100644
--- a/drivers/gpu/drm/drm_managed.c
+++ b/drivers/gpu/drm/drm_managed.c
@@ -48,10 +48,10 @@ struct drmres {
 	 * Some archs want to perform DMA into kmalloc caches
 	 * and need a guaranteed alignment larger than
 	 * the alignment of a 64-bit integer.
-	 * Thus we use ARCH_KMALLOC_MINALIGN here and get exactly the same
+	 * Thus we use ARCH_DMA_MINALIGN here and get at least the same
 	 * buffer alignment as if it was allocated by plain kmalloc().
 	 */
-	u8 __aligned(ARCH_KMALLOC_MINALIGN) data[];
+	u8 __aligned(ARCH_DMA_MINALIGN) data[];
 };
 
 static void free_dr(struct drmres *dr)