Am Dienstag, 6. November 2018, 16:37:05 CET schrieb Damian Kos: > Some of the functions (like cdn_dp_dpcd_read, cdn_dp_get_edid_block) > allow to read 64KiB, but the cdn_dp_mailbox_read_receive, that is > used by them, can read only up to 255 bytes at once. Normally, it's > not a big issue as DPCD or EDID reads won't (hopefully) exceed that > value. > The real issue here is the revocation list read during the HDCP > authentication process. (problematic use case: > https://chromium.googlesource.com/chromiumos/third_party/kernel/+/chromeos-4.4/drivers/gpu/drm/rockchip/cdn-dp-reg.c#1152) > The list can reach 127*5+4 bytes (num devs * 5 bytes per ID/Bksv + > 4 bytes of an additional info). > In other words - CTSes with HDCP Repeater won't pass without this > fix. Oh, and the driver will most likely stop working (best case > scenario). > > Signed-off-by: Damian Kos <dkos@xxxxxxxxxxx> applied to drm-misc-next Thanks Heiko _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
