[Bug 76738] I915: Warning on linux-3.14-rc7

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76738

--- Comment #1 from Peter Senna Tschudin <peter.senna at gmail.com> ---
Created attachment 96534
  --> https://bugs.freedesktop.org/attachment.cgi?id=96534&action=edit
Dmesg with drm.debug=0xe after applying patch from Daniel Vetter

Dmesg with drm.debug=0xe and with the patch:

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 7be5984431bb..3c0f8f095a6b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -450,6 +450,8 @@ static void i9xx_clock(int refclk, intel_clock_t *clock)
 {
        clock->m = i9xx_dpll_compute_m(clock);
        clock->p = clock->p1 * clock->p2;
+       printk("p1 = %u, p2 = %u, n = %u\n", clock->p1, clock->p2,
+              clock->n);
        if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
                return;
        clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);

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