Spacemit: prevent uninitialized thread shutdown (triggerd by the rabbit)

Signed-off-by: Sven-Ola Tuecke <sven-ola@gmx.de>

Author: sven-ola

patch/kernel/archive/spacemit-6.18/018-Spacemit-prevent-uninitialized-thread-shutdown.patch

@@ -0,0 +1,36 @@
+From 30d1e1e8208b91cd67fbe2138af396f19442cf05 Mon Sep 17 00:00:00 2001
+From: Sven-Ola Tuecke <sven-ola@gmx.de>
+Date: Tue, 3 Feb 2026 15:49:29 +0100
+Subject: [PATCH] Spacemit: prevent uninitialized thread shutdown
+
+Signed-off-by: Sven-Ola Tuecke <sven-ola@gmx.de>
+---
+ drivers/remoteproc/k1x-rproc.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/remoteproc/k1x-rproc.c b/drivers/remoteproc/k1x-rproc.c
+index f3548e6da..a56d75f2a 100644
+--- a/drivers/remoteproc/k1x-rproc.c
++++ b/drivers/remoteproc/k1x-rproc.c
+@@ -633,7 +633,7 @@ static void spacemit_rproc_remove(struct platform_device *pdev)
+ 	struct spacemit_rproc *ddata = rproc->priv;
+ 
+ 	for (i = 0; i < MAX_MBOX; ++i)
+-		if (ddata->mb[i].kthread_running)
++		if (ddata->mb[i].kthread_running && ddata->mb[i].mb_thread)
+ 			kthread_stop(ddata->mb[i].mb_thread);
+ 
+ 	rproc_del(rproc);
+@@ -664,7 +664,8 @@ static void spacemit_rproc_shutdown(struct platform_device *pdev)
+ 
+ 	for (i = 0; i < MAX_MBOX; ++i) {
+ 		/* release the resource of rt thread */
+-		kthread_stop(priv->mb[i].mb_thread);
++		if (priv->mb[i].kthread_running && priv->mb[i].mb_thread)
++			kthread_stop(priv->mb[i].mb_thread);
+ 		/* mbox_free_channel(priv->mb[i].chan); */
+ 	}
+ }
+-- 
+2.34.1
+