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authorMarcus Folkesson2018-03-17 10:54:13 -0700
committerDmitry Torokhov2018-03-26 15:22:16 -0700
commit85f46fbf5e242ef923fd313722e65cb6d2170149 (patch)
treea20e6021842e99f6a828a3cb3a4529e36cf2f257 /Documentation/input
parent12e510dbc57b29b4314cd792851532bea76b4715 (diff)
Input: usbtouchscreen - do not rely on input_dev->users
If the device is unused and suspended, a call to open will cause the device to autoresume through the call to usb_autopm_get_interface(). input_dev->users is already incremented by the input subsystem, therefore this expression will always be evaluated to true: if (input->users || usbtouch->type->irq_always) result = usb_submit_urb(usbtouch->irq, GFP_NOIO); The same URB will then be fail when resubmitted in usbtouch_open(). Introduce usbtouch->is_open to keep track of the state instead. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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