ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/layerscape/patches-5.4/701-net-0105-sdk-qbman-fix-issue-in-qman_delete_cgr_safe.patch b/target/linux/layerscape/patches-5.4/701-net-0105-sdk-qbman-fix-issue-in-qman_delete_cgr_safe.patch
new file mode 100644
index 0000000..830a2ec
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0105-sdk-qbman-fix-issue-in-qman_delete_cgr_safe.patch
@@ -0,0 +1,60 @@
+From a16c129c9dfae01921faaed98587d318459d5cfc Mon Sep 17 00:00:00 2001
+From: Zhao Qiang <qiang.zhao@nxp.com>
+Date: Wed, 30 May 2018 17:09:02 +0800
+Subject: [PATCH] sdk/qbman: fix issue in qman_delete_cgr_safe()
+
+The wait_for_completion() call in qman_delete_cgr_safe()
+was triggering a scheduling while atomic bug, replacing the
+kthread with a smp_call_function_single() call to fix it.
+
+Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
+Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
+---
+ drivers/staging/fsl_qbman/qman_high.c | 29 ++++++-----------------------
+ 1 file changed, 6 insertions(+), 23 deletions(-)
+
+--- a/drivers/staging/fsl_qbman/qman_high.c
++++ b/drivers/staging/fsl_qbman/qman_high.c
+@@ -3075,36 +3075,19 @@ struct cgr_comp {
+ struct completion completion;
+ };
+
+-static int qman_delete_cgr_thread(void *p)
++static void qman_delete_cgr_smp_call(void *p)
+ {
+- struct cgr_comp *cgr_comp = (struct cgr_comp *)p;
+- int res;
+-
+- res = qman_delete_cgr((struct qman_cgr *)cgr_comp->cgr);
+- complete(&cgr_comp->completion);
+-
+- return res;
++ qman_delete_cgr((struct qman_cgr *)p);
+ }
+
+ void qman_delete_cgr_safe(struct qman_cgr *cgr)
+ {
+- struct task_struct *thread;
+- struct cgr_comp cgr_comp;
+-
+ preempt_disable();
+ if (qman_cgr_cpus[cgr->cgrid] != smp_processor_id()) {
+- init_completion(&cgr_comp.completion);
+- cgr_comp.cgr = cgr;
+- thread = kthread_create(qman_delete_cgr_thread, &cgr_comp,
+- "cgr_del");
+-
+- if (likely(!IS_ERR(thread))) {
+- kthread_bind(thread, qman_cgr_cpus[cgr->cgrid]);
+- wake_up_process(thread);
+- wait_for_completion(&cgr_comp.completion);
+- preempt_enable();
+- return;
+- }
++ smp_call_function_single(qman_cgr_cpus[cgr->cgrid],
++ qman_delete_cgr_smp_call, cgr, true);
++ preempt_enable();
++ return;
+ }
+ qman_delete_cgr(cgr);
+ preempt_enable();