HID: wacom: avoid copying Bluetooth input reports

wacom_intuos_bt_irq() duplicates the received Bluetooth report with
kmemdup() so that it can pass 10-byte input report payloads to the
common Intuos parser. The helper then copies each payload back into
wacom->data before calling wacom_intuos_irq().

Avoid the allocation and copy by temporarily pointing wacom->data at the
current 10-byte payload while the common parser runs, then restoring the
original report pointer. The Bluetooth report parser keeps using the
original report buffer for dispatch and battery parsing, while the common
parser sees the same payload bytes as before.

This also removes the unchecked kmemdup() result from the Bluetooth IRQ
path.

Suggested-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

0 files changed, 0 insertions, 0 deletions