linux-kernel - [PATCH 24/28] 53c700: convert from dma_cache_sync to dma_sync_single_for

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Message-Id: <20200819065555.1802761-25-hch@lst.de>
Date:   Wed, 19 Aug 2020 08:55:51 +0200
From:   Christoph Hellwig <hch@....de>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Joonyoung Shim <jy0922.shim@...sung.com>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Pawel Osciak <pawel@...iak.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Matt Porter <mporter@...nel.crashing.org>,
        iommu@...ts.linux-foundation.org
Cc:     Tom Lendacky <thomas.lendacky@....com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, nouveau@...ts.freedesktop.org,
        netdev@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-scsi@...r.kernel.org, linux-mm@...ck.org,
        alsa-devel@...a-project.org
Subject: [PATCH 24/28] 53c700: convert from dma_cache_sync to dma_sync_single_for_device

Use the proper modern API to transfer cache ownership for incoherent DMA.

Signed-off-by: Christoph Hellwig <hch@....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