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%3Ba=su...

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 stable@vger.kernel.org know about it.

From 3c3e4b3a708a9d6451052e348981f37d2b3e92b0 Mon Sep 17 00:00:00 2001

From: Dan Carpenter dan.carpenter@oracle.com 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 dan.carpenter@oracle.com

commit 3c3e4b3a708a9d6451052e348981f37d2b3e92b0 upstream.

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

Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

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

--- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -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 dan.carpenter@oracle.com are

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