linux-kernel - [PATCH 3/4] firmware: imx: scu-pd: ignore power domain not owned

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Date:   Thu, 23 Apr 2020 14:59:33 +0800
From:   peng.fan@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux@...pel-privat.de,
        leonard.crestez@....com, daniel.baluta@....com,
        aisheng.dong@....com, qiangqing.zhang@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-imx@....com, Peng Fan <peng.fan@....com>
Subject: [PATCH 3/4] firmware: imx: scu-pd: ignore power domain not owned

From: Peng Fan <peng.fan@....com>

Should not register power domain that not owned by current
partition.

Reviewed-by: Leonard Crestez <leonard.crestez@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/firmware/imx/scu-pd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c
index d1b313fa7b96..7b43bd63cc1e 100644
--- a/drivers/firmware/imx/scu-pd.c
+++ b/drivers/firmware/imx/scu-pd.c
@@ -46,6 +46,7 @@
 
 #include <dt-bindings/firmware/imx/rsrc.h>
 #include <linux/firmware/imx/sci.h>
+#include <linux/firmware/imx/svc/rm.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -246,6 +247,9 @@ imx_scu_add_pm_domain(struct device *dev, int idx,
 	struct imx_sc_pm_domain *sc_pd;
 	int ret;
 
+	if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx))
+		return NULL;
+
 	sc_pd = devm_kzalloc(dev, sizeof(*sc_pd), GFP_KERNEL);
 	if (!sc_pd)
 		return ERR_PTR(-ENOMEM);
-- 
2.16.4