linux-kernel - [PATCH 1/2] clocksource/drivers/imx-sysctr: mark two variable with __ro_after

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Message-Id: <20211201125030.2307746-1-peng.fan@oss.nxp.com>
Date:   Wed,  1 Dec 2021 20:50:29 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     daniel.lezcano@...aro.org, tglx@...utronix.de, shawnguo@...nel.org,
        s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        van.freenix@...il.com, Peng Fan <peng.fan@....com>,
        Kees Cook <keescook@...omium.org>
Subject: [PATCH 1/2] clocksource/drivers/imx-sysctr: mark two variable with __ro_after_init

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

sys_ctr_base and cmpcr will not be updated after init, so mark
as __ro_after_init.

Cc: Kees Cook <keescook@...omium.org>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/clocksource/timer-imx-sysctr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/timer-imx-sysctr.c b/drivers/clocksource/timer-imx-sysctr.c
index 18b90fc56bfc..2b309af11266 100644
--- a/drivers/clocksource/timer-imx-sysctr.c
+++ b/drivers/clocksource/timer-imx-sysctr.c
@@ -20,8 +20,8 @@
 
 #define SYS_CTR_CLK_DIV		0x3
 
-static void __iomem *sys_ctr_base;
-static u32 cmpcr;
+static void __iomem *sys_ctr_base __ro_after_init;
+static u32 cmpcr __ro_after_init;
 
 static void sysctr_timer_enable(bool enable)
 {
-- 
2.25.1