[PATCH 24/28] 53c700: convert from dma_cache_sync to dma_sync_single_for_device
From: Christoph Hellwig <hch@lst.de>
Date: 2020-08-19 06:58:21
Also in:
alsa-devel, linux-doc, linux-iommu, linux-media, linux-mips, linux-mm, linux-nvme, linux-samsung-soc, linux-scsi, lkml, netdev, nouveau
Subsystem:
53c700 and 53c700-66 scsi driver, lasi 53c700 driver for parisc, scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
Use the proper modern API to transfer cache ownership for incoherent DMA. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/scsi/53c700.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index 521950d0731e4a..57a08c42d00325 100644
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c@@ -269,18 +269,25 @@ NCR_700_get_SXFER(struct scsi_device *SDp) spi_period(SDp->sdev_target)); } +static inline dma_addr_t virt_to_dma(struct NCR_700_Host_Parameters *h, void *p) +{ + return h->pScript + ((uintptr_t)p - (uintptr_t)h->script); +} + static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h, void *addr, size_t size) { if (h->noncoherent) - dma_cache_sync(h->dev, addr, size, DMA_TO_DEVICE); + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), + size, DMA_BIDIRECTIONAL); } static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h, void *addr, size_t size) { if (h->noncoherent) - dma_cache_sync(h->dev, addr, size, DMA_FROM_DEVICE); + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), size, + DMA_BIDIRECTIONAL); } struct Scsi_Host *
--
2.28.0
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