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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: robh+dt@kernel.org, catalin.marinas@arm.com, hch@lst.de,
	robin.murphy@arm.com, devicetree@vger.kernel.org,
	iommu@lists.linux-foundation.org, linux-mm@kvack.org,
	Marek Szyprowski <m.szyprowski@samsung.com>
Cc: will@kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rpi-kernel@lists.infradead.org
Subject: [PATCH 2/4] dma-direct: Turn zone_dma_bits default value into a define
Date: Thu,  1 Oct 2020 18:17:38 +0200	[thread overview]
Message-ID: <20201001161740.29064-3-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20201001161740.29064-1-nsaenzjulienne@suse.de>

Other code might need to reference it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 include/linux/dma-direct.h | 1 +
 kernel/dma/direct.c        | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h
index 38ed3b55034d..ef19ff505d09 100644
--- a/include/linux/dma-direct.h
+++ b/include/linux/dma-direct.h
@@ -12,6 +12,7 @@
 #include <linux/mem_encrypt.h>
 #include <linux/swiotlb.h>
 
+#define ZONE_DMA_BITS_DEFAULT	24
 extern unsigned int zone_dma_bits;
 
 /*
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 121a9c1969dd..4b3cfa02532b 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -20,7 +20,7 @@
  * it for entirely different regions. In that case the arch code needs to
  * override the variable below for dma-direct to work properly.
  */
-unsigned int zone_dma_bits __ro_after_init = 24;
+unsigned int zone_dma_bits __ro_after_init = ZONE_DMA_BITS_DEFAULT;
 
 static inline dma_addr_t phys_to_dma_direct(struct device *dev,
 		phys_addr_t phys)
-- 
2.28.0

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  parent reply	other threads:[~2020-10-01 16:18 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 16:17 [PATCH 0/4] arm64: Default to 32-bit wide ZONE_DMA Nicolas Saenz Julienne
2020-10-01 16:17 ` [PATCH 1/4] of/fdt: Update zone_dma_bits when running in bcm2711 Nicolas Saenz Julienne
2020-10-01 17:15   ` Catalin Marinas
2020-10-01 17:23     ` Catalin Marinas
2020-10-01 17:31       ` Nicolas Saenz Julienne
2020-10-01 20:02         ` Rob Herring
2020-10-02 11:55         ` Catalin Marinas
2020-10-08 10:05           ` Nicolas Saenz Julienne
2020-10-08 10:13             ` Catalin Marinas
2020-10-08 19:43               ` Ard Biesheuvel
2020-10-09  3:59                 ` Jeremy Linton
2020-10-09  8:37                   ` Nicolas Saenz Julienne
2020-10-09  7:10             ` Christoph Hellwig
2020-10-09  7:37               ` Ard Biesheuvel
2020-10-09  8:36                 ` Nicolas Saenz Julienne
2020-10-09  9:13                   ` Ard Biesheuvel
2020-10-09 13:33                     ` Nicolas Saenz Julienne
2020-10-09 15:24                     ` Lorenzo Pieralisi
2020-10-09 16:23                       ` Ard Biesheuvel
2020-10-09 17:10                         ` Catalin Marinas
2020-10-10 10:36                           ` Ard Biesheuvel
2020-10-10 10:53                             ` Nicolas Saenz Julienne
2020-10-10 12:38                               ` Catalin Marinas
2020-10-12  6:47                           ` Christoph Hellwig
2020-10-12  8:47                             ` Catalin Marinas
2020-10-02  9:05   ` kernel test robot
2020-10-01 16:17 ` Nicolas Saenz Julienne [this message]
2020-10-01 16:17 ` [PATCH 3/4] arm64: Default to 32-bit ZONE_DMA Nicolas Saenz Julienne
2020-10-01 17:19   ` Catalin Marinas
2020-10-01 16:17 ` [PATCH 4/4] mm: Update DMA zones description Nicolas Saenz Julienne
2020-10-01 17:19   ` Catalin Marinas

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