patch "iio: imu: st_lsm6dsx: fix possible lockup in" added to char-misc-linus

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

iio: imu: st_lsm6dsx: fix possible lockup in

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-linus 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 hopefully also be merged in Linus's tree for the next -rc kernel release.

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

From 8114ef86e2058e2554111b793596f17bee23fa15 Mon Sep 17 00:00:00 2001
From: Silvano Seva <[email protected]>
Date: Tue, 11 Mar 2025 09:49:49 +0100
Subject: iio: imu: st_lsm6dsx: fix possible lockup in
st_lsm6dsx_read_tagged_fifo

Prevent st_lsm6dsx_read_tagged_fifo from falling in an infinite loop in case pattern_len is equal to zero and the device FIFO is not empty.

---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

index 480a9b31065c..8a9d2593576a 100644
@@ -626,6 +626,9 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw)
 	if (!fifo_len)
 		return 0;
 
+	if (!pattern_len)
+		pattern_len = ST_LSM6DSX_TAGGED_SAMPLE_SIZE;
+
 	for (read_len = 0; read_len < fifo_len; read_len += pattern_len) {
 		err = st_lsm6dsx_read_block(hw,
 					    ST_LSM6DSX_REG_FIFO_OUT_TAG_ADDR,

2.49.0