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Commit 9cb4975b authored by Shashank Babu Chinta Venkata's avatar Shashank Babu Chinta Venkata Committed by Gerrit - the friendly Code Review server
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drm/msm/dsi-staging: handle DSI command transfer during suspend 



When a DSI command transfer is initiated from debugfs interface,
current error log does not give out adequate information. Handle
this scenario and modify logging appropriately.

Change-Id: I5c61d9ce5559631948ce91482644941aaf481349
Signed-off-by: default avatarShashank Babu Chinta Venkata <sbchin@codeaurora.org>
Signed-off-by: default avatarAbhijith Desai <desaia@codeaurora.org>
parent 9b145944

drivers/gpu/drm/msm/dsi-staging/dsi_display.c

+11 −0
Original line number Diff line number Diff line
@@ -919,6 +919,17 @@ int dsi_display_cmd_transfer(struct drm_connector *connector, 


	mutex_lock(&dsi_display->display_lock);

	rc = dsi_display_ctrl_get_host_init_state(dsi_display, &state);



	/**

	 * Handle scenario where a command transfer is initiated through

	 * sysfs interface when device is in suepnd state.

	 */

	if (!rc && !state) {

		pr_warn_ratelimited("Command xfer attempted while device is in suspend state\n"

				);

		rc = -EPERM;

		goto end;

	}

	if (rc || !state) {

		pr_err("[DSI] Invalid host state %d rc %d\n",

				state, rc);