Patch "drm/amd/display: Return the correct HDCP error code" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amd/display: Return the correct HDCP error code

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amd-display-return-the-correct-hdcp-error-code.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit e4f3dd365caf01279362596040e421dd134d6888
Author: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Date:   Wed Feb 14 13:29:51 2024 -0700

    drm/amd/display: Return the correct HDCP error code
    
    [ Upstream commit e64b3f55e458ce7e2087a0051f47edabf74545e7 ]
    
    [WHY & HOW]
    If the display is null when creating an HDCP session, return a proper
    error code.
    
    Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
    Cc: Alex Deucher <alexander.deucher@xxxxxxx>
    Cc: stable@xxxxxxxxxxxxxxx
    Acked-by: Alex Hung <alex.hung@xxxxxxx>
    Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
    Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
    Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
index 972f2600f967f..05d96fa681354 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
@@ -405,6 +405,9 @@ enum mod_hdcp_status mod_hdcp_hdcp2_create_session(struct mod_hdcp *hdcp)
 	hdcp_cmd = (struct ta_hdcp_shared_memory *)psp->hdcp_context.hdcp_shared_buf;
 	memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
 
+	if (!display)
+		return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND;
+
 	hdcp_cmd->in_msg.hdcp2_create_session_v2.display_handle = display->index;
 
 	if (hdcp->connection.link.adjust.hdcp2.force_type == MOD_HDCP_FORCE_TYPE_0)




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