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patch "iio: adc: ad7606: fix reading unnecessary data from device" added to staging-linus

PATCH [email protected] 1 participant 1 message Dec 9, 2019

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

iio: adc: ad7606: fix reading unnecessary data from device

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 341826a065660d1b77d89e6335b6095cd654271c Mon Sep 17 00:00:00 2001
From: Beniamin Bia <[email protected]>
Date: Mon, 4 Nov 2019 18:26:34 +0200
Subject: iio: adc: ad7606: fix reading unnecessary data from device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When a conversion result is being read from ADC, the driver reads the number of channels + 1 because it thinks that IIO_CHAN_SOFT_TIMESTAMP is also a physical channel. This patch fixes this issue.

Fixes 2985a5d88455 ("staging: iio: adc: ad7606: Move out of staging")
---
 drivers/iio/adc/ad7606.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/iio/adc/ad7606.c +1 -1
index f5ba94c03a8d..e4683a68522a 100644
@@ -85,7 +85,7 @@ static int ad7606_reg_access(struct iio_dev *indio_dev,
 
 static int ad7606_read_samples(struct ad7606_state *st)
 {
-	unsigned int num = st->chip_info->num_channels;
+	unsigned int num = st->chip_info->num_channels - 1;
 	u16 *data = st->data;
 	int ret;
 
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