[PATCH 2/2] usb: typec: tipd: Add an additional overflow check

[Sven Peter]

tps6598x_block_read already checks for the maximum length of the read
but tps6598x_block_write does not. Add the symmetric check there as
well.

Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
---
 drivers/usb/typec/tipd/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index c18ec3785592..70e2d0d410c9 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -139,6 +139,9 @@ static int tps6598x_block_write(struct tps6598x *tps, u8 reg,
 {
 	u8 data[TPS_MAX_LEN + 1];
 
+	if (WARN_ON(len + 1 > sizeof(data)))
+		return -EINVAL;
+
 	if (!tps->i2c_protocol)
 		return regmap_raw_write(tps->regmap, reg, val, len);
 
-- 
2.25.1