The calculations done to obtain byte_offset can result into a negative
number, fix its type.

This patch fixes the following sparse error:

drivers/input/touchscreen/atmel_mxt_ts.c:1481:44: warning: unsigned value that used to be signed checked against zero?
drivers/input/touchscreen/atmel_mxt_ts.c:1479:49: signed value source

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 87c6a10381f2..26ba82fb60b6 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1397,7 +1397,8 @@ static int mxt_prepare_cfg_mem(struct mxt_data *data, struct mxt_cfg *cfg)
 {
 	struct device *dev = &data->client->dev;
 	struct mxt_object *object;
-	unsigned int type, instance, size, byte_offset;
+	unsigned int type, instance, size;
+	int byte_offset;
 	int offset;
 	int ret;
 	int i;

---
base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731
change-id: 20260504-fix-sparse-3bfa6ba62e5b

Best regards,
-- 
Ricardo Ribalda <ribalda@chromium.org>

On Mon, May 04, 2026 at 10:55:03AM +0000, Ricardo Ribalda wrote:
> The calculations done to obtain byte_offset can result into a negative
> number, fix its type.
> 
> This patch fixes the following sparse error:
> 
> drivers/input/touchscreen/atmel_mxt_ts.c:1481:44: warning: unsigned value that used to be signed checked against zero?
> drivers/input/touchscreen/atmel_mxt_ts.c:1479:49: signed value source
> 
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>

Applied, thank you.

-- 
Dmitry