HID: multitouch: Correct devm device reference for hidinput input_dev name

Reference the HID device rather than the input device for the devm
allocation of the input_dev name. Referencing the input_dev would lead to a
use-after-free when the input_dev was unregistered and subsequently fires a
uevent that depends on the name. At the point of firing the uevent, the
name would be freed by devres management.

Use devm_kasprintf to simplify the logic for allocating memory and
formatting the input_dev name string.

Reported-by: Maxime Ripard <[email protected]>
Closes: https://lore.kernel.org/linux-input/ZOZIZCND+L0P1wJc@penguin/T/#m443f3dce92520f74b6cf6ffa8653f9c92643d4ae
Fixes: c08d46aa805b ("HID: multitouch: devm conversion")
Suggested-by: Maxime Ripard <[email protected]>
Suggested-by: Dmitry Torokhov <[email protected]>
Signed-off-by: Rahul Rameshbabu <[email protected]>
Reviewed-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Benjamin Tissoires <[email protected]>

0 files changed, 0 insertions, 0 deletions