On Thu, May 07, 2015 at 06:38:38PM +0100, Damien Lespiau wrote:
> Right now, when finishing the cycle with odd dividers without finding a
> suitable candidate, we end up in an infinite loop. Make sure to break in
> that case.
>
> Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_ddi.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 2e24fa4..da7aa0f 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -1180,6 +1180,10 @@ found:
> }
>
> if (min_dco_index > 2 && dco_count == 2) {
> + /* oh well, we tried... */
> + if (retry_with_odd)
> + break;
Shouldn't we have a return value somewhere here and then indicate to
userspace that things seriously went wrong? The error code handling is
almost there already to pass it all back up to haswell_crtc_compute_clock.
-Daniel
> +
> retry_with_odd = true;
> dco_count = 0;
> }
> --
> 2.1.0
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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