On Fri, Feb 02, 2018 at 04:15:14PM +0530, Ramalingam C wrote: > If a HDCP repeater is detected with zero hdcp authenticated > downstream devices, there are two option as below: > > 1. Dont continue on second stage authentication. Disable encryption. > 2. Continue with second stage authentication excluding the KSV list and > continue encryption on success. > > This patch adopts the option 1.
It doesn't seem that hard to adopt option 2 and avoid failure. That would result in a better experience. > > Signed-off-by: Ramalingam C <ramalinga...@intel.com> > --- > drivers/gpu/drm/i915/intel_hdcp.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_hdcp.c > b/drivers/gpu/drm/i915/intel_hdcp.c > index 0021511ae4d7..182a3c8a4e4a 100644 > --- a/drivers/gpu/drm/i915/intel_hdcp.c > +++ b/drivers/gpu/drm/i915/intel_hdcp.c > @@ -175,10 +175,10 @@ int intel_hdcp_auth_downstream(struct intel_connector > *connector) > return -EPERM; > } > > - /* If there are no downstream devices, we're all done. */ > + /* If there are no downstream devices, we're not encrypting. */ > num_downstream = DRM_HDCP_NUM_DOWNSTREAM(bstatus[0]); > if (num_downstream == 0) > - return 0; > + return -EINVAL; > > ksv_fifo = kzalloc(num_downstream * DRM_HDCP_KSV_LEN, GFP_KERNEL); > if (!ksv_fifo) > -- > 2.7.4 > -- Sean Paul, Software Engineer, Google / Chromium OS _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
