Patch "iio: adc: meson-saradc: unlock on error in meson_sar_adc_lock()" has been added to the 4.15-stable tree

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

iio: adc: meson-saradc: unlock on error in meson_sar_adc_lock()

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
iio-adc-meson-saradc-unlock-on-error-in-meson_sar_adc_lock.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Dan Carpenter <[email protected]>
Date: Thu, 8 Mar 2018 12:31:53 +0300
Subject: iio: adc: meson-saradc: unlock on error in meson_sar_adc_lock()

From: Dan Carpenter <[email protected]>

commit 3c3e4b3a708a9d6451052e348981f37d2b3e92b0 upstream.

The meson_sar_adc_lock() function is not supposed to hold the "indio_dev->mlock" on the error path.

---
 drivers/iio/adc/meson_saradc.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -462,8 +462,10 @@ static int meson_sar_adc_lock(struct iio
 			regmap_read(priv->regmap, MESON_SAR_ADC_DELAY, &val);
 		} while (val & MESON_SAR_ADC_DELAY_BL30_BUSY && timeout--);
 
-		if (timeout < 0)
+		if (timeout < 0) {
+			mutex_unlock(&indio_dev->mlock);
 			return -ETIMEDOUT;
+		}
 	}
 
 	return 0;

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/iio-adc-meson-saradc-unlock-on-error-in-meson_sar_adc_lock.patch