[PATCH 4.7 063/186] spi: pxa2xx: Clear all RFT bits in reset_sccr1() on Intel Quark

From	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups	linux.kernel
Subject	[PATCH 4.7 063/186] spi: pxa2xx: Clear all RFT bits in reset_sccr1() on Intel Quark
Date	2016-08-18 16:50 +0200
Message-ID	<s7wNQ-16E-23@gated-at.bofh.it> (permalink)
References	<s7wb7-OK-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 152bc19e2fc2b7fce7ffbc2a9cea94b147223702 upstream.

It seems the commit e5262d0568dc ("spi: spi-pxa2xx: SPI support for Intel Quark
X1000") misses one place to be adapted for Intel Quark, i.e. in reset_sccr1().

Clear all RFT bits when call reset_sccr1() on Intel Quark.

Fixes: e5262d0568dc ("spi: spi-pxa2xx: SPI support for Intel Quark X1000")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spi/spi-pxa2xx.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -585,7 +585,14 @@ static void reset_sccr1(struct driver_da
 	u32 sccr1_reg;
 
 	sccr1_reg = pxa2xx_spi_read(drv_data, SSCR1) & ~drv_data->int_cr1;
-	sccr1_reg &= ~SSCR1_RFT;
+	switch (drv_data->ssp_type) {
+	case QUARK_X1000_SSP:
+		sccr1_reg &= ~QUARK_X1000_SSCR1_RFT;
+		break;
+	default:
+		sccr1_reg &= ~SSCR1_RFT;
+		break;
+	}
 	sccr1_reg |= chip->threshold;
 	pxa2xx_spi_write(drv_data, SSCR1, sccr1_reg);
 }

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[PATCH 4.7 063/186] spi: pxa2xx: Clear all RFT bits in reset_sccr1() on Intel Quark Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-08-18 16:50 +0200

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