From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
If vlv_find_best_dpll() couldn't find suitable PLL settings,
just say so instead of lying to caller.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b57ced9..c919582 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -663,6 +663,7 @@ vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
unsigned int bestppm = 1000000;
/* min update 19.2 MHz */
int max_n = min(limit->n.max, refclk / 19200);
+ bool found = false;
target *= 5; /* fast clock */
@@ -691,18 +692,20 @@ vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
if (ppm < 100 && clock.p > best_clock->p) {
bestppm = 0;
*best_clock = clock;
+ found = true;
}
if (bestppm >= 10 && ppm < bestppm - 10) {
bestppm = ppm;
*best_clock = clock;
+ found = true;
}
}
}
}
}
- return true;
+ return found;
}
bool intel_crtc_active(struct drm_crtc *crtc)
--
1.8.1.5
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