LoongArch inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAZ2YN CVE: NA

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This patch fix the compile error: dma-direct.h not found

Fixes: 90d2bbc1ade2 ("LoongArch: use arch specific phys_to_dma") Signed-off-by: Hongchen Zhang zhanghongchen@loongson.cn --- arch/loongarch/include/asm/dma-direct.h | 21 +++++++++++++++++++++ arch/loongarch/kernel/dma.c | 17 ++--------------- 2 files changed, 23 insertions(+), 15 deletions(-) create mode 100644 arch/loongarch/include/asm/dma-direct.h

diff --git a/arch/loongarch/include/asm/dma-direct.h b/arch/loongarch/include/asm/dma-direct.h new file mode 100644 index 000000000000..a8fbae3bd5da --- /dev/null +++ b/arch/loongarch/include/asm/dma-direct.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_LOONGARCH_DMA_DIRECT_H +#define _ASM_LOONGARCH_DMA_DIRECT_H + +extern int node_id_offset; + +static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + long nid = (paddr >> 44) & 0xf; + + return ((nid << 44) ^ paddr) | (nid << node_id_offset); +} + +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) +{ + long nid = (daddr >> node_id_offset) & 0xf; + + return ((nid << node_id_offset) ^ daddr) | (nid << 44); +} + +#endif /* _ASM_LOONGARCH_DMA_DIRECT_H */ diff --git a/arch/loongarch/kernel/dma.c b/arch/loongarch/kernel/dma.c index cc0ccde58db8..34836408b15a 100644 --- a/arch/loongarch/kernel/dma.c +++ b/arch/loongarch/kernel/dma.c @@ -11,21 +11,8 @@ * 48bit physical address space and embed it into 40bit. */

-static int node_id_offset; - -dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - long nid = (paddr >> 44) & 0xf; - - return ((nid << 44) ^ paddr) | (nid << node_id_offset); -} - -phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) -{ - long nid = (daddr >> node_id_offset) & 0xf; - - return ((nid << node_id_offset) ^ daddr) | (nid << 44); -} +int node_id_offset; +EXPORT_SYMBOL_GPL(node_id_offset);

void acpi_arch_dma_setup(struct device *dev) {