[PATCH] iio: adc: tsc2046: fix a warning message in tsc2046_adc_update_scan_mode()

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These variables are unsigned so the condition can't be less than zero
and the warning message will never be printed.

Fixes: 5fec3541aa88 ("iio: adc: add ADC driver for the TI TSC2046 controller")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/iio/adc/ti-tsc2046.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c
index 89a818b653b4..cf5373d5cdd7 100644
--- a/drivers/iio/adc/ti-tsc2046.c
+++ b/drivers/iio/adc/ti-tsc2046.c
@@ -398,7 +398,7 @@ static int tsc2046_adc_update_scan_mode(struct iio_dev *indio_dev,
 	priv->xfer.len = size;
 	priv->time_per_scan_us = size * 8 * priv->time_per_bit_ns / NSEC_PER_USEC;
 
-	if ((priv->scan_interval_us - priv->time_per_scan_us) < 0)
+	if (priv->scan_interval_us > priv->time_per_scan_us)
 		dev_warn(&priv->spi->dev, "The scan interval (%d) is less then calculated scan time (%d)\n",
 			 priv->scan_interval_us, priv->time_per_scan_us);
 
-- 
2.30.2




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