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pxp will not start correctly until after mei_pxp bind completes and intel_pxp_init_hw() is called. Wait for the bind to complete before proceeding with startup. This fixes a race condition during bootup where we observed a small window for pxp commands to be sent, starting pxp before mei_pxp bind completed. Changes since v2: - wait for pxp_component to bind instead of returning -EAGAIN (Daniele) Changes since v1: - check pxp_component instead of pxp_component_added (Daniele) - pxp_component needs tee_mutex (Daniele) - return -EAGAIN so caller knows to retry (Daniele) Signed-off-by: Juston Li <justonli@chromium.org> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220818174205.2412730-1-justonli@chromium.org