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drm/i915/hdcp: fix intel_hdcp_get_repeater_ctl() error return value

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intel_hdcp_get_repeater_ctl() is supposed to return unsigned register
contents. Returning negative error values is unexpected, and none of the
callers check for that.

Sort of fix the error cases by returning 0. I don't think we should hit
these cases anyway, and using 0 for the registers is safer than
0xffffffea (-EINVAL).

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231219104746.1065431-2-jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2023-12-19 12:47:46 +02:00
parent 4773293bc5
commit 547a720e8e
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_hdcp.c
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@@ -347,7 +347,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *i915,
default:
drm_err(&i915->drm, "Unknown transcoder %d\n",
cpu_transcoder);
return -EINVAL;
return 0;
}
}
@@ -364,7 +364,7 @@ u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *i915,
return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
default:
drm_err(&i915->drm, "Unknown port %d\n", port);
return -EINVAL;
return 0;
}
}