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The Windows Precision Touchpad spec "Figure 4 Button Only Down and Up" and "Table 9 Report Sequence for Button Only Down and Up" indicate that the first packet of a (possibly hybrid mode multi-packet) frame may contain a contact-count of 0 if only a button is pressed and no fingers are detected. This means that a value of 0 for contact-count is a valid value and should be used as expected contact count when it is the first packet (num_received == 0), as extra check to make sure that this is the first packet of a buttons only frame, we also check that the timestamp is different. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.