usb: typec: tipd: Remove WARN_ON in tps6598x_block_read

[ Upstream commit b7a0a63f3fed57d413bb857de164ea9c3984bc4e ]

Calling tps6598x_block_read with a higher than allowed len can be
handled by just returning an error. There's no need to crash systems
with panic-on-warn enabled.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20210914140235.65955-3-sven@svenpeter.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c
index 30bfc314b743cf71c8f56b3110f072f394ab94e7..6cb5c8e2c8535a6f1422d2209419fcfea0f1f26d 100644 (file)
--- a/drivers/usb/typec/tps6598x.c
+++ b/drivers/usb/typec/tps6598x.c
@@ -109,7 +109,7 @@ tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len)
        u8 data[TPS_MAX_LEN + 1];
        int ret;
 
-       if (WARN_ON(len + 1 > sizeof(data)))
+       if (len + 1 > sizeof(data))
                return -EINVAL;
 
        if (!tps->i2c_protocol)