patch "iio: adc: ti-ads8344: properly byte swap value" added to staging-linus

This is a note to let you know that I've just added the patch titled

iio: adc: ti-ads8344: properly byte swap value

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From dd7de4c0023e7564cabe39d64b2822a522890792 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <[email protected]>
Date: Thu, 16 Apr 2020 22:54:27 +0200
Subject: iio: adc: ti-ads8344: properly byte swap value

The first received byte is the MSB, followed by the LSB so the value needs to be byte swapped.

Also, the ADC actually has a delay of one clock on the SPI bus. Read three bytes to get the last bit.

---
 drivers/iio/adc/ti-ads8344.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

index 9a460807d46d..abe4b56c847c 100644
@@ -29,7 +29,7 @@ struct ads8344 {
 	struct mutex lock;
 
 	u8 tx_buf ____cacheline_aligned;
-	u16 rx_buf;
+	u8 rx_buf[3];
 };
 
 #define ADS8344_VOLTAGE_CHANNEL(chan, si)				\

@@ -89,11 +89,11 @@ static int ads8344_adc_conversion(struct ads8344 *adc, int channel,
 
 	udelay(9);
 
-	ret = spi_read(spi, &adc->rx_buf, 2);
+	ret = spi_read(spi, adc->rx_buf, sizeof(adc->rx_buf));
 	if (ret)
 		return ret;
 
-	return adc->rx_buf;
+	return adc->rx_buf[0] << 9 | adc->rx_buf[1] << 1 | adc->rx_buf[2] >> 7;
 }
 
 static int ads8344_read_raw(struct iio_dev *iio,

2.26.1