linux-kernel - [PATCH 4/8] ARM: at91: pm: keep at91_pm_backup

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Date:   Thu, 14 Feb 2019 15:54:47 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <robh+dt@...nel.org>, <mark.rutland@....com>,
        <Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <Ludovic.Desroches@...rochip.com>, <linux@...linux.org.uk>,
        <mturquette@...libre.com>, <sboyd@...nel.org>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <Claudiu.Beznea@...rochip.com>
Subject: [PATCH 4/8] ARM: at91: pm: keep at91_pm_backup_init() only for
 SAMA5D2 SoCs

From: Claudiu Beznea <claudiu.beznea@...rochip.com>

In at91_pm_backup_init() return if it is not about SAMA5D2 SoCs.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---
 arch/arm/mach-at91/pm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index e42db02eafe4..c83f78000ab3 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -588,6 +588,9 @@ static int __init at91_pm_backup_init(void)
 	struct platform_device *pdev = NULL;
 	int ret = -ENODEV;
 
+	if (!IS_ENABLED(CONFIG_SOC_SAMA5D2))
+		return -EPERM;
+
 	if (!at91_is_pm_mode_active(AT91_PM_BACKUP))
 		return 0;
 
-- 
2.7.4