patch "iio: xilinx-xadc: Fix ADC-B powerdown" added to staging-linus

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

iio: xilinx-xadc: Fix ADC-B powerdown

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 e44ec7794d88f918805d700240211a9ec05ed89d Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <[email protected]>
Date: Fri, 3 Apr 2020 15:27:13 +0200
Subject: iio: xilinx-xadc: Fix ADC-B powerdown

The check for shutting down the second ADC is inverted. This causes it to be powered down when it should be enabled. As a result channels that are supposed to be handled by the second ADC return invalid conversion results.

---
 drivers/iio/adc/xilinx-xadc-core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

index ec227b358cd6..f50e04a8b0ec 100644
@@ -722,13 +722,14 @@ static int xadc_power_adc_b(struct xadc *xadc, unsigned int seq_mode)
 {
 	uint16_t val;
 
+	/* Powerdown the ADC-B when it is not needed. */
 	switch (seq_mode) {
 	case XADC_CONF1_SEQ_SIMULTANEOUS:
 	case XADC_CONF1_SEQ_INDEPENDENT:
-		val = XADC_CONF2_PD_ADC_B;
+		val = 0;
 		break;
 	default:
-		val = 0;
+		val = XADC_CONF2_PD_ADC_B;
 		break;
 	}
 

2.26.1