• Hans de Goede's avatar
    HID: i2c-hid: Silently fail probe for CHPN0001 touchscreen · 2dcc8197
    Hans de Goede authored
    The CHPN0001 ACPI device has a _CID of PNP0C50 and even has the _DSM to
    get the HID descriptor address, but it is not a HID device at all.
    
    It uses its own protocol which is handled by the (still being upstreamed)
    chipone_icn8505 driver. I guess the _CID and the _DSM are the result of
    a copy and paste job when the vendor was building the ACPI tables.
    
    Before this patch the i2c_hid_driver's probe function will fail with a
    "hid_descr_cmd failed" error.
    
    This commit makes the i2c_hid_driver's probe function instead silently
    ignored devices with an ACPI id of CHPN0001.
    Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
    Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
    2dcc8197
i2c-hid.c 31.5 KB