mirror of
https://github.com/torvalds/linux.git
synced 2026-10-07 05:31:08 -04:00
Sean Paul
9ab57658a6
This patch fixes a few bugs: 1- We weren't taking into account sha_leftovers when adding multiple ksvs to sha_text. As such, we were or'ing the end of ksv[j - 1] with the beginning of ksv[j] 2- In the sha_leftovers == 2 and sha_leftovers == 3 case, bstatus was being placed on the wrong half of sha_text, overlapping the leftover ksv value 3- In the sha_leftovers == 2 case, we need to manually terminate the byte stream with 0x80 since the hardware doesn't have enough room to add it after writing M0 The upside is that all of the HDCP supported HDMI repeaters I could find on Amazon just strip HDCP anyways, so it turns out to be _really_ hard to hit any of these cases without an MST hub, which is not (yet) supported. Oh, and the sha_leftovers == 1 case works perfectly! Fixes:ee5e5e7a5e("drm/i915: Add HDCP framework + base implementation") Cc: Chris Wilson <[email protected]> Cc: Ramalingam C <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Sean Paul <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Joonas Lahtinen <[email protected]> Cc: Rodrigo Vivi <[email protected]> Cc: [email protected] Cc: <[email protected]> # v4.17+ Reviewed-by: Ramalingam C <[email protected]> Signed-off-by: Sean Paul <[email protected]> Signed-off-by: Ramalingam C <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] (cherry picked from commit1f0882214f) Signed-off-by: Jani Nikula <[email protected]>