linux-kernel - [PATCH 13/13] remoteproc: Properly deal with a kernel panic when attached

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Message-Id: <20200826164529.224476-14-mathieu.poirier@linaro.org>
Date:   Wed, 26 Aug 2020 10:45:29 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     bjorn.andersson@...aro.org, ohad@...ery.com
Cc:     linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 13/13] remoteproc: Properly deal with a kernel panic when attached

The panic handler operation of registered remote processors
should also be called when remote processors have been
attached to.

Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/remoteproc/remoteproc_core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 5586582f54c5..54b5e3437ab5 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -2491,7 +2491,11 @@ static int rproc_panic_handler(struct notifier_block *nb, unsigned long event,
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(rproc, &rproc_list, node) {
-		if (!rproc->ops->panic || rproc->state != RPROC_RUNNING)
+		if (!rproc->ops->panic)
+			continue;
+
+		if (rproc->state != RPROC_RUNNING &&
+		    rproc->state != RPROC_ATTACHED)
 			continue;
 
 		d = rproc->ops->panic(rproc);
-- 
2.25.1