linux-kernel - [PATCH 2/2] remoteproc: wkup_m3: Set deny_sysfs

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Date:   Mon, 31 Jan 2022 19:41:52 +0530
From:   Puranjay Mohan <puranjay12@...il.com>
To:     kishon@...com, vigneshr@...com, s-anna@...com,
        bjorn.andersson@...aro.org, mathieu.poirier@...aro.org,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Puranjay Mohan <p-mohan@...com>
Subject: [PATCH 2/2] remoteproc: wkup_m3: Set deny_sysfs_ops flag

From: Suman Anna <s-anna@...com>

The Wakeup M3 remote processor is controlled by the wkup_m3_ipc
client driver, so set the newly introduced 'deny_sysfs_ops' flag
to not allow any overriding of the remoteproc firmware or state
from userspace.

Signed-off-by: Suman Anna <s-anna@...com>
Signed-off-by: Puranjay Mohan <p-mohan@...com>
---
 drivers/remoteproc/wkup_m3_rproc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/remoteproc/wkup_m3_rproc.c b/drivers/remoteproc/wkup_m3_rproc.c
index 484f7605823e..bbb84bb28af8 100644
--- a/drivers/remoteproc/wkup_m3_rproc.c
+++ b/drivers/remoteproc/wkup_m3_rproc.c
@@ -163,6 +163,7 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev)
 	}
 
 	rproc->auto_boot = false;
+	rproc->deny_sysfs_ops = true;
 
 	wkupm3 = rproc->priv;
 	wkupm3->rproc = rproc;
-- 
2.24.3