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

iio: adc: ad7173: fix channels index for syscalib_mode

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing 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 be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From 0eb8d7b25397330beab8ee62c681975b79f37223 Mon Sep 17 00:00:00 2001 From: David Lechner dlechner@baylibre.com Date: Thu, 3 Jul 2025 14:51:17 -0500 Subject: iio: adc: ad7173: fix channels index for syscalib_mode

Fix the index used to look up the channel when accessing the syscalib_mode attribute. The address field is a 0-based index (same as scan_index) that it used to access the channel in the ad7173_channels array throughout the driver. The channels field, on the other hand, may not match the address field depending on the channel configuration specified in the device tree and could result in an out-of-bounds access.

Fixes: 031bdc8aee01 ("iio: adc: ad7173: add calibration support") Signed-off-by: David Lechner dlechner@baylibre.com Link: https://patch.msgid.link/20250703-iio-adc-ad7173-fix-channels-index-for-sysc... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/adc/ad7173.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c index dd9fa35555c7..03412895f6dc 100644 --- a/drivers/iio/adc/ad7173.c +++ b/drivers/iio/adc/ad7173.c @@ -318,7 +318,7 @@ static int ad7173_set_syscalib_mode(struct iio_dev *indio_dev, { struct ad7173_state *st = iio_priv(indio_dev);

- st->channels[chan->channel].syscalib_mode = mode; + st->channels[chan->address].syscalib_mode = mode;

return 0; } @@ -328,7 +328,7 @@ static int ad7173_get_syscalib_mode(struct iio_dev *indio_dev, { struct ad7173_state *st = iio_priv(indio_dev);

- return st->channels[chan->channel].syscalib_mode; + return st->channels[chan->address].syscalib_mode; }

static ssize_t ad7173_write_syscalib(struct iio_dev *indio_dev, @@ -347,7 +347,7 @@ static ssize_t ad7173_write_syscalib(struct iio_dev *indio_dev, if (!iio_device_claim_direct(indio_dev)) return -EBUSY;

- mode = st->channels[chan->channel].syscalib_mode; + mode = st->channels[chan->address].syscalib_mode; if (sys_calib) { if (mode == AD7173_SYSCALIB_ZERO_SCALE) ret = ad_sd_calibrate(&st->sd, AD7173_MODE_CAL_SYS_ZERO,