Patch "thunderbolt: Read retimer NVM authentication status prior tb_retimer_set_inbound_sbtx()" has been added to the 6.1-stable tree

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

    thunderbolt: Read retimer NVM authentication status prior tb_retimer_set_inbound_sbtx()

to the 6.1-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:
     thunderbolt-read-retimer-nvm-authentication-status-p.patch
and it can be found in the queue-6.1 subdirectory.

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



commit 23f0f18b7a05f344a6deee893d9d438308e23a77
Author: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Date:   Fri May 26 14:46:44 2023 +0300

    thunderbolt: Read retimer NVM authentication status prior tb_retimer_set_inbound_sbtx()
    
    [ Upstream commit 1402ba08abae5cfa583ff1a40b99c098a0532d41 ]
    
    According to the USB4 retimer guide the correct order is immediately
    after sending ENUMERATE_RETIMERS so update the code to follow this.
    
    Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/thunderbolt/retimer.c b/drivers/thunderbolt/retimer.c
index 9cc28197dbc45..edbd92435b41a 100644
--- a/drivers/thunderbolt/retimer.c
+++ b/drivers/thunderbolt/retimer.c
@@ -187,6 +187,21 @@ static ssize_t nvm_authenticate_show(struct device *dev,
 	return ret;
 }
 
+static void tb_retimer_nvm_authenticate_status(struct tb_port *port, u32 *status)
+{
+	int i;
+
+	tb_port_dbg(port, "reading NVM authentication status of retimers\n");
+
+	/*
+	 * Before doing anything else, read the authentication status.
+	 * If the retimer has it set, store it for the new retimer
+	 * device instance.
+	 */
+	for (i = 1; i <= TB_MAX_RETIMER_INDEX; i++)
+		usb4_port_retimer_nvm_authenticate_status(port, i, &status[i]);
+}
+
 static void tb_retimer_set_inbound_sbtx(struct tb_port *port)
 {
 	int i;
@@ -455,18 +470,16 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 		return ret;
 
 	/*
-	 * Enable sideband channel for each retimer. We can do this
-	 * regardless whether there is device connected or not.
+	 * Immediately after sending enumerate retimers read the
+	 * authentication status of each retimer.
 	 */
-	tb_retimer_set_inbound_sbtx(port);
+	tb_retimer_nvm_authenticate_status(port, status);
 
 	/*
-	 * Before doing anything else, read the authentication status.
-	 * If the retimer has it set, store it for the new retimer
-	 * device instance.
+	 * Enable sideband channel for each retimer. We can do this
+	 * regardless whether there is device connected or not.
 	 */
-	for (i = 1; i <= TB_MAX_RETIMER_INDEX; i++)
-		usb4_port_retimer_nvm_authenticate_status(port, i, &status[i]);
+	tb_retimer_set_inbound_sbtx(port);
 
 	for (i = 1; i <= TB_MAX_RETIMER_INDEX; i++) {
 		/*



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