linux-kernel - [PATCH 2/6] mmc: mmc_spi: replace flush_kernel_dcache_page with flush_dcache

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Message-Id: <20210712060928.4161649-3-hch@lst.de>
Date:   Mon, 12 Jul 2021 08:09:24 +0200
From:   Christoph Hellwig <hch@....de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>
Cc:     Russell King <linux@...linux.org.uk>, Guo Ren <guoren@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Nick Hu <nickhu@...estech.com>,
        Greentime Hu <green.hu@...il.com>,
        Vincent Chen <deanbo422@...il.com>,
        Helge Deller <deller@....de>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Geoff Levand <geoff@...radead.org>,
        Paul Cercueil <paul@...pouillou.net>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Alex Shi <alexs@...nel.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-mm@...ck.org,
        linux-doc@...r.kernel.org
Subject: [PATCH 2/6] mmc: mmc_spi: replace flush_kernel_dcache_page with flush_dcache_page

Pages passed to block drivers can be mapped page cache pages, so we
must use flush_dcache_page here instead of the more limited
flush_kernel_dcache_page that is intended for highmem pages only.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/mmc/host/mmc_spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 65c65bb5737f..3d28a3d3001b 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -948,7 +948,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
 
 		/* discard mappings */
 		if (direction == DMA_FROM_DEVICE)
-			flush_kernel_dcache_page(sg_page(sg));
+			flush_dcache_page(sg_page(sg));
 		kunmap(sg_page(sg));
 		if (dma_dev)
 			dma_unmap_page(dma_dev, dma_addr, PAGE_SIZE, dir);
-- 
2.30.2