linux-kernel - [PATCH 1/2] gpu: drm: i915: remove dead code

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Message-ID: <20170515215605.GA14963@embeddedgus>
Date:   Mon, 15 May 2017 16:56:05 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Daniel Vetter <daniel.vetter@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH 1/2] gpu: drm: i915: remove dead code

Local variable has_reduced_clock is assigned to a constant value and it is
never updated again. Remove this variable and the dead code it guards.

Addresses-Coverity-ID: 1362230
Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/gpu/drm/i915/intel_display.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ed1f4f2..b13b53b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9565,8 +9565,6 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct dpll reduced_clock;
-	bool has_reduced_clock = false;
 	struct intel_shared_dpll *pll;
 	const struct intel_limit *limit;
 	int refclk = 120000;
@@ -9609,8 +9607,7 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
 		return -EINVAL;
 	}
 
-	ironlake_compute_dpll(crtc, crtc_state,
-			      has_reduced_clock ? &reduced_clock : NULL);
+	ironlake_compute_dpll(crtc, crtc_state, NULL);
 
 	pll = intel_get_shared_dpll(crtc, crtc_state, NULL);
 	if (pll == NULL) {
@@ -9619,10 +9616,6 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
 		return -EINVAL;
 	}
 
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
-	    has_reduced_clock)
-		crtc->lowfreq_avail = true;
-
 	return 0;
 }
 
-- 
2.5.0