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authorŁukasz Stelmach <l.stelmach@samsung.com>2020-10-02 14:22:35 +0200
committerMark Brown <broonie@kernel.org>2020-10-02 21:54:16 +0100
commit581e2b41977dfc2d4c26c8e976f89c43bb92f9bf (patch)
tree640a6e1e1801307b41016f15447aea9f576a40cc /drivers/spi
parent184ec013fc3bd6ed99cd721f5faae93b8272046f (diff)
spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath()
Fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without the patches such transfers fail to complete. This solution to the problem is found in the vendor kernel for ARTIK5 boards based on Exynos3250. Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> Link: https://lore.kernel.org/r/20201002122243.26849-2-l.stelmach@samsung.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-s3c64xx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 924b24441789..26c7cb79cd78 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -685,11 +685,11 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
sdd->state &= ~RXBUSY;
sdd->state &= ~TXBUSY;
- s3c64xx_enable_datapath(sdd, xfer, use_dma);
-
/* Start the signals */
s3c64xx_spi_set_cs(spi, true);
+ s3c64xx_enable_datapath(sdd, xfer, use_dma);
+
spin_unlock_irqrestore(&sdd->lock, flags);
if (use_dma)