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    Subject[PATCH 5.16 0003/1039] HID: Ignore battery for Elan touchscreen on HP Envy X360 15t-dr100
    Date
    From: Karl Kurbjun <kkurbjun@gmail.com>

    commit f3193ea1b6779023334faa72b214ece457e02656 upstream.

    Battery status on Elan tablet driver is reported for the HP ENVY x360
    15t-dr100. There is no separate battery for the Elan controller resulting in a
    battery level report of 0% or 1% depending on whether a stylus has interacted
    with the screen. These low battery level reports causes a variety of bad
    behavior in desktop environments. This patch adds the appropriate quirk to
    indicate that the batery status is unused for this target.

    Cc: stable@vger.kernel.org
    Signed-off-by: Karl Kurbjun <kkurbjun@gmail.com>
    Signed-off-by: Jiri Kosina <jkosina@suse.cz>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/hid/hid-ids.h | 1 +
    drivers/hid/hid-input.c | 2 ++
    2 files changed, 3 insertions(+)

    --- a/drivers/hid/hid-ids.h
    +++ b/drivers/hid/hid-ids.h
    @@ -398,6 +398,7 @@
    #define USB_DEVICE_ID_HP_X2 0x074d
    #define USB_DEVICE_ID_HP_X2_10_COVER 0x0755
    #define I2C_DEVICE_ID_HP_ENVY_X360_15 0x2d05
    +#define I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100 0x29CF
    #define I2C_DEVICE_ID_HP_SPECTRE_X360_15 0x2817
    #define USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN 0x2544
    #define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN 0x2706
    --- a/drivers/hid/hid-input.c
    +++ b/drivers/hid/hid-input.c
    @@ -329,6 +329,8 @@ static const struct hid_device_id hid_ba
    HID_BATTERY_QUIRK_IGNORE },
    { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
    HID_BATTERY_QUIRK_IGNORE },
    + { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
    + HID_BATTERY_QUIRK_IGNORE },
    { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
    HID_BATTERY_QUIRK_IGNORE },
    { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),

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