[PATCH 2/3] iio: pressure: dps310: reset the chip at probe

[Rupesh Majhi <zoone.rupert@gmail.com>]

The chip keeps its registers across a warm reboot, and probe changes
only the shift bits in CFG_REG. A reboot during a FIFO capture leaves
FIFO_EN set, so the ready bits never come and every raw read times
out. The timeout reset does not clear it either, since the CFG_REG
update that follows writes FIFO_EN back from the register cache.

Reset the chip first, as remove already does.

Fixes: 90f0d1016398 ("iio: pressure: dps310: read buffered samples from the hardware FIFO")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260921183132.233136-1-zoone.rupert%40gmail.com
Signed-off-by: Rupesh Majhi <zoone.rupert@gmail.com>
---
Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com>

 drivers/iio/pressure/dps310.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index b6aa5dbe2bcd..29778f25bb33 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -1445,6 +1445,11 @@ static int dps310_probe(struct i2c_client *client)
 	if (rc)
 		return rc;
 
+	/* The chip keeps its state across a warm reboot */
+	rc = dps310_reset_wait(data);
+	if (rc)
+		return rc;
+
 	rc = dps310_startup(data);
 	if (rc)
 		return rc;
-- 
2.43.0