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| author | Stefano Stabellini <sstabellini@kernel.org> | 2017-04-13 14:04:21 -0700 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2017-05-02 11:14:42 +0200 |
| commit | e058632670b709145730a134acc3f83f392f7aa7 (patch) | |
| tree | abecc50c3223d577868dac099c72bfe0c3696c49 /include/xen | |
| parent | 4a806016223c6df131280c82f1ed69c820b6a9ff (diff) | |
| download | linux-e058632670b709145730a134acc3f83f392f7aa7.tar.bz2 | |
xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..."
The following commit:
commit 815dd18788fe0d41899f51b91d0560279cf16b0d
Author: Bart Van Assche <bart.vanassche@sandisk.com>
Date: Fri Jan 20 13:04:04 2017 -0800
treewide: Consolidate get_dma_ops() implementations
rearranges get_dma_ops in a way that xen_dma_ops are not returned when
running on Xen anymore, dev->dma_ops is returned instead (see
arch/arm/include/asm/dma-mapping.h:get_arch_dma_ops and
include/linux/dma-mapping.h:get_dma_ops).
Fix the problem by storing dev->dma_ops in dev_archdata, and setting
dev->dma_ops to xen_dma_ops. This way, xen_dma_ops is returned naturally
by get_dma_ops. The Xen code can retrieve the original dev->dma_ops from
dev_archdata when needed. It also allows us to remove __generic_dma_ops
from common headers.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Julien Grall <julien.grall@arm.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org> [4.11+]
CC: linux@armlinux.org.uk
CC: catalin.marinas@arm.com
CC: will.deacon@arm.com
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
CC: Julien Grall <julien.grall@arm.com>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/arm/page-coherent.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/xen/arm/page-coherent.h b/include/xen/arm/page-coherent.h index 95ce6ac3a971..b0a2bfc8d647 100644 --- a/include/xen/arm/page-coherent.h +++ b/include/xen/arm/page-coherent.h @@ -2,8 +2,16 @@ #define _ASM_ARM_XEN_PAGE_COHERENT_H #include <asm/page.h> +#include <asm/dma-mapping.h> #include <linux/dma-mapping.h> +static inline const struct dma_map_ops *__generic_dma_ops(struct device *dev) +{ + if (dev && dev->archdata.dev_dma_ops) + return dev->archdata.dev_dma_ops; + return get_arch_dma_ops(NULL); +} + void __xen_dma_map_page(struct device *hwdev, struct page *page, dma_addr_t dev_addr, unsigned long offset, size_t size, enum dma_data_direction dir, unsigned long attrs); |