From 0cf771b5d02244d2b2515cb17d967e19bf33e83f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Fri, 14 May 2021 15:57:39 +0300 Subject: [PATCH] drm/i915: Fix g4x cxsr enable condition MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The intention was to check whether the primary plane is enabled without any sprites planes being enabled. Instead we ended up checking whether just any one of the planes is enabled. g4x isn't vlv/chv and cxsr only works with the primary plane. Fix the check to examine the bitmask of active planes rather than the number of bits set in said bitmask. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20210514125751.17075-3-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy --- drivers/gpu/drm/i915/intel_pm.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 9452f5a..456bc6e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1376,8 +1376,7 @@ static int g4x_compute_pipe_wm(struct intel_atomic_state *state, struct intel_crtc_state *crtc_state = intel_atomic_get_new_crtc_state(state, crtc); struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal; - int num_active_planes = hweight8(crtc_state->active_planes & - ~BIT(PLANE_CURSOR)); + u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR); const struct g4x_pipe_wm *raw; const struct intel_plane_state *old_plane_state; const struct intel_plane_state *new_plane_state; @@ -1417,7 +1416,7 @@ static int g4x_compute_pipe_wm(struct intel_atomic_state *state, wm_state->sr.cursor = raw->plane[PLANE_CURSOR]; wm_state->sr.fbc = raw->fbc; - wm_state->cxsr = num_active_planes == BIT(PLANE_PRIMARY); + wm_state->cxsr = active_planes == BIT(PLANE_PRIMARY); level = G4X_WM_LEVEL_HPLL; if (!g4x_raw_crtc_wm_is_valid(crtc_state, level)) -- 2.7.4