diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-02-10 10:56:39 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-02-13 09:51:45 +0100 |
| commit | 6d4e9a8efe3d59f31367d79e970c2f328da139a4 (patch) | |
| tree | 7e236f45053e397f6810c2494dda6c251b19a5bc /arch/mips/include | |
| parent | 14ac09a65e19528ca05df56f8e36a4a8d4949795 (diff) | |
driver core: lift dma_default_coherent into common code
Lift the dma_default_coherent variable from the mips architecture code
to the driver core. This allows an architecture to sdefault all device
to be DMA coherent at run time, even if the kernel is build with support
for DMA noncoherent device. By allowing device_initialize to set the
->dma_coherent field to this default the amount of arch hooks required
for this behavior can be greatly reduced.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/dma-coherence.h | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h deleted file mode 100644 index 846c5ade30d1..000000000000 --- a/arch/mips/include/asm/dma-coherence.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> - * - */ -#ifndef __ASM_DMA_COHERENCE_H -#define __ASM_DMA_COHERENCE_H - -#ifdef CONFIG_DMA_MAYBE_COHERENT -extern bool dma_default_coherent; -static inline bool dev_is_dma_coherent(struct device *dev) -{ - return dma_default_coherent; -} -#else -#define dma_default_coherent (!IS_ENABLED(CONFIG_DMA_NONCOHERENT)) -#endif - -#endif |