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HID: usbhid: enable always-poll quirk for Elan Touchscreen
Enable the always-poll quirk for Elan Touchscreens found on some recent Samsung laptops. Without this quirk the device keeps disconnecting from the bus (and is re-enumerated) unless opened (and kept open, should an input event occur). Note that while the device can be run-time suspended, the autosuspend timeout must be high enough to allow the device to be polled at least once before being suspended. Specifically, using autosuspend_delay_ms=0 will still cause the device to disconnect on input events. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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2 changed files with 4 additions and 0 deletions
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@ -296,6 +296,9 @@
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#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7 0x73f7
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#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001 0xa001
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#define USB_VENDOR_ID_ELAN 0x04f3
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#define USB_DEVICE_ID_ELAN_TOUCHSCREEN 0x0089
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#define USB_VENDOR_ID_ELECOM 0x056e
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#define USB_DEVICE_ID_ELECOM_BM084 0x0061
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@ -70,6 +70,7 @@ static const struct hid_blacklist {
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{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN, HID_QUIRK_ALWAYS_POLL },
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{ USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS },
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{ USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET },
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