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drm/i915/hdcp: Use both bits for device_count

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Smatch spotted:
drivers/gpu/drm/i915//intel_hdcp.c:1406 hdcp2_authenticate_repeater_topology() warn: should this be a bitwise op?

and indeed looks to be suspect that we do need to use a bitwise or to
combine the two register fields into one counter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190517102225.3069-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-05-17 11:22:25 +01:00
parent 96ac08137e
commit af461ff3fa
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_hdcp.c
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@ -1402,8 +1402,8 @@ int hdcp2_authenticate_repeater_topology(struct intel_connector *connector)
return -EINVAL;
}
device_cnt = HDCP_2_2_DEV_COUNT_HI(rx_info[0]) << 4 ||
HDCP_2_2_DEV_COUNT_LO(rx_info[1]);
device_cnt = (HDCP_2_2_DEV_COUNT_HI(rx_info[0]) << 4 |
HDCP_2_2_DEV_COUNT_LO(rx_info[1]));
if (drm_hdcp_check_ksvs_revoked(dev, msgs.recvid_list.receiver_ids,
device_cnt)) {
DRM_ERROR("Revoked receiver ID(s) is in list\n");