NFC: Core must test the device polling state inside the device lock
There can ever be only one call to nfc_targets_found() after polling has been engaged. This could be from a target discovered event from the driver, or from an error handler to notify poll will never complete. Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
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