From: Nicholas Kazlauskas Date: Mon, 13 Jan 2020 14:00:46 +0000 (-0500) Subject: drm/amd/display: Check hw_init state when determining if DMCUB is initialized X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e5f0b5214beea71bd25584da451897300742795e;p=linux.git drm/amd/display: Check hw_init state when determining if DMCUB is initialized [Why] CW2 may already be programmed when coming back from S4. In this case we want to unconditionally replace whatever DMCUB version is currently enabled with the latest. [How] Check the hw_init flag to know whether or not we've previously executed the initliazed routine. Signed-off-by: Nicholas Kazlauskas Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c index ea99d4cf34cc6..85a518bf8a76b 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -312,6 +312,9 @@ enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init) if (!dmub->sw_init) return DMUB_STATUS_INVALID; + if (!dmub->hw_init) + return DMUB_STATUS_OK; + if (dmub->hw_funcs.is_hw_init) *is_hw_init = dmub->hw_funcs.is_hw_init(dmub);