Variable is not used in functions, and its assignment is redundant too.
So it should be deleted.

The clang_analyzer complains as follows:

drivers/gpu/drm/i915/display/intel_dpll.c:1653:2 warning:
Value stored to 'bestm1' is never read.

drivers/gpu/drm/i915/display/intel_dpll.c:1651:2 warning:
Value stored to 'bestn' is never read.

Reported-by: Zeal Robot <[email protected]>
Signed-off-by: luo penghao <[email protected]>
---
 drivers/gpu/drm/i915/display/intel_dpll.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c 
b/drivers/gpu/drm/i915/display/intel_dpll.c
index b84ed4a..28b1616 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -1644,13 +1644,11 @@ static void chv_prepare_pll(const struct 
intel_crtc_state *crtc_state)
        enum pipe pipe = crtc->pipe;
        enum dpio_channel port = vlv_pipe_to_channel(pipe);
        u32 loopfilter, tribuf_calcntr;
-       u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
+       u32 bestm2, bestp1, bestp2, bestm2_frac;
        u32 dpio_val;
        int vco;
 
-       bestn = crtc_state->dpll.n;
        bestm2_frac = crtc_state->dpll.m2 & 0x3fffff;
-       bestm1 = crtc_state->dpll.m1;
        bestm2 = crtc_state->dpll.m2 >> 22;
        bestp1 = crtc_state->dpll.p1;
        bestp2 = crtc_state->dpll.p2;
-- 
2.15.2

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