This is a note to let you know that I've just added the patch titled
usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-typec-tipd-remove-warn_on-in-tps6598x_block_read.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e0ecffd99ffac0f4cadb9f17507b700750cdd7df
Author: Sven Peter <sven@xxxxxxxxxxxxx>
Date: Tue Sep 14 16:02:35 2021 +0200
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@xxxxxxxxxxxxxxx>
Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210914140235.65955-3-sven@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c
index 987b8fcfb2aae..a4dd23a8f1954 100644
--- a/drivers/usb/typec/tps6598x.c
+++ b/drivers/usb/typec/tps6598x.c
@@ -93,7 +93,7 @@ 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)
