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When a UEFI_DRIVER attempts to open a protocol interface with BY_DRIVER attribute that it already has open with BY_DRIVER attribute, OpenProtocol() returns EFI_ALREADY_STARTED. This is not an error. The UEFI-2.7 spec currently says, > EFI_ALREADY_STARTED -- Attributes is BY_DRIVER and there is an item on > the open list with an attribute of BY_DRIVER > whose agent handle is the same as AgentHandle. (In fact it is so much an expected condition that recent USWG Mantis ticket <https://mantis.uefi.org/mantis/view.php?id=1815> will codify its additional edk2-specific behavior, namely to output the protocol interface at once.) Downgrade the log mask for this one condition to DEBUG_INFO, in SataControllerStart(). This will match the log mask of the other two informative messages in this function, "SataControllerStart START", and "SataControllerStart END status = %r" (at which point Status can only be EFI_SUCCESS). Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com>