[PATCH] Input: atmel_mxt_ts - fix double free in mxt_read_info_block

From: José Expósito
Date: Sun Dec 12 2021 - 14:44:19 EST


The "id_buf" buffer is stored in "data->raw_info_block" and freed by
"mxt_free_object_table" in case of error.

Return instead of jumping to avoid a double free.

Addresses-Coverity-ID: 1474582 ("Double free")
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 05de92c0293b..eb66cd2689b7 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1882,7 +1882,7 @@ static int mxt_read_info_block(struct mxt_data *data)
if (error) {
dev_err(&client->dev, "Error %d parsing object table\n", error);
mxt_free_object_table(data);
- goto err_free_mem;
+ return error;
}

data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START);
--
2.25.1