FAILED: Patch "iio: gyro: itg3200: Fix unchecked return value in read_raw" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From b79b24f578cdb2d657db23e5fafe82c7e6a36b72 Mon Sep 17 00:00:00 2001
From: Antoniu Miclaus <[email protected]>
Date: Thu, 29 Jan 2026 17:01:45 +0200
Subject: [PATCH] iio: gyro: itg3200: Fix unchecked return value in read_raw

The return value from itg3200_read_reg_s16() is stored in ret but never checked. The function unconditionally returns IIO_VAL_INT, ignoring potential I2C read failures. This causes garbage data to be returned to userspace when the read fails, with no error reported.

Add proper error checking to propagate the failure to callers.

---
 drivers/iio/gyro/itg3200_core.c | 2 ++
 1 file changed, 2 insertions(+)

index cd8a2dae56cd9..bfe95ec1abda9 100644
@@ -93,6 +93,8 @@ static int itg3200_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		reg = (u8)chan->address;
 		ret = itg3200_read_reg_s16(indio_dev, reg, val);
+		if (ret)
+			return ret;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		*val = 0;

2.51.0