ARM: hisi: fix the sysctrl mappingmcpm-wfi-0710

sysctrl mapping isn't created when we read register in sysctrl.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-hisi/platmcpm.c b/arch/arm/mach-hisi/platmcpm.c
index 143fcdf3fd9f..3cad973382ab 100644
--- a/arch/arm/mach-hisi/platmcpm.c
+++ b/arch/arm/mach-hisi/platmcpm.c
@@ -185,6 +185,13 @@ static int __init hip04_mcpm_init(void)
 		goto err;
 	}
 
+	sysctrl = of_iomap(np, 0);
+	if (!sysctrl) {
+		pr_err("failed to get sysctrl base\n");
+		ret = -ENOMEM;
+		goto err_sysctrl;
+	}
+
 	if (!hip04_cpu_table_init())
 		return -EINVAL;
 	ret = mcpm_platform_register(&hip04_mcpm_ops);
@@ -194,6 +201,8 @@ static int __init hip04_mcpm_init(void)
 	}
 	mcpm_smp_set_ops();
 	return ret;
+err_sysctrl:
+	iounmap(relocation);
 err:
 	return ret;
 }