linux-kernel - [PATCH v4 2/2] remoteproc: wkup_m3: Set deny_sysfs

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Message-ID: <20220209090342.13220-3-p-mohan@ti.com>
Date:   Wed, 9 Feb 2022 14:33:42 +0530
From:   Puranjay Mohan <p-mohan@...com>
To:     <puranjay12@...il.com>, <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>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Puranjay Mohan <p-mohan@...com>
Subject: [PATCH v4 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;
-- 
2.17.1