linux-kernel - [PATCH 5.4 165/203] spi: sprd: Fix the incorrect SPI register

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Date:   Fri, 17 Jan 2020 00:18:02 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Huanpeng Xin <huanpeng.xin@...soc.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.4 165/203] spi: sprd: Fix the incorrect SPI register

From: Huanpeng Xin <huanpeng.xin@...soc.com>

commit 5e9c5236b7b86779b53b762f7e66240c3f18314b upstream.

The original code used an incorrect SPI register to initialize the SPI
controller in sprd_spi_init_hw(), thus fix it.

Fixes: e7d973a31c24 ("spi: sprd: Add SPI driver for Spreadtrum SC9860")
Signed-off-by: Huanpeng Xin <huanpeng.xin@...soc.com>
Signed-off-by: Baolin Wang <baolin.wang7@...il.com>
Link: https://lore.kernel.org/r/b4f7f89ec0fdc595335687bfbd9f962213bc4a1d.1575443510.git.baolin.wang7@gmail.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/spi/spi-sprd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/spi/spi-sprd.c
+++ b/drivers/spi/spi-sprd.c
@@ -674,7 +674,7 @@ static void sprd_spi_init_hw(struct sprd
 	u16 word_delay, interval;
 	u32 val;
 
-	val = readl_relaxed(ss->base + SPRD_SPI_CTL7);
+	val = readl_relaxed(ss->base + SPRD_SPI_CTL0);
 	val &= ~(SPRD_SPI_SCK_REV | SPRD_SPI_NG_TX | SPRD_SPI_NG_RX);
 	/* Set default chip selection, clock phase and clock polarity */
 	val |= ss->hw_mode & SPI_CPHA ? SPRD_SPI_NG_RX : SPRD_SPI_NG_TX;