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| author | Oliver Barta <oliver.barta@aptiv.com> | 2020-03-28 13:41:00 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2020-04-16 12:50:36 +0300 |
| commit | 3ffaf56e912e76cf09c560244c8804f9bebda8b1 (patch) | |
| tree | 8cf3d969d0ace091c8d6fe6ca739c64e124ac53b /drivers/gpu/drm | |
| parent | da90417467b4035146e8ba534ee7f49ceffb6251 (diff) | |
| download | linux-3ffaf56e912e76cf09c560244c8804f9bebda8b1.tar.xz | |
drm/i915: HDCP: fix Ri prime check done during link check
The check was always succeeding even in case of a mismatch due to the
HDCP_STATUS_ENC bit being set. Make sure both bits are actually set.
Signed-off-by: Oliver Barta <oliver.barta@aptiv.com>
Fixes: 2320175feb74 ("drm/i915: Implement HDCP for HDMI")
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200328104100.12162-1-oliver.barta@aptiv.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdmi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 011d83c2a1e3..6b1bc955124c 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -1561,7 +1561,8 @@ bool intel_hdmi_hdcp_check_link(struct intel_digital_port *intel_dig_port) intel_de_write(i915, HDCP_RPRIME(i915, cpu_transcoder, port), ri.reg); /* Wait for Ri prime match */ - if (wait_for(intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) & + if (wait_for((intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) & + (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC)) == (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) { drm_err(&i915->drm, "Ri' mismatch detected, link check failed (%x)\n", |