Register with kernel restart handler instead of setting arm_pm_restart
directly. Select high priority since the restart handler is instantiated
through devicetree, indicating that it should be used if configured.
Signed-off-by: Guenter Roeck <li...@roeck-us.net>
---
drivers/power/reset/arm-versatile-reboot.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/power/reset/arm-versatile-reboot.c
b/drivers/power/reset/arm-versatile-reboot.c
index 5b08bff..e533812 100644
--- a/drivers/power/reset/arm-versatile-reboot.c
+++ b/drivers/power/reset/arm-versatile-reboot.c
@@ -13,7 +13,6 @@
#include <linux/reboot.h>
#include <linux/regmap.h>
#include <linux/of.h>
-#include <asm/system_misc.h>
#define REALVIEW_SYS_LOCK_OFFSET 0x20
#define REALVIEW_SYS_LOCK_VAL 0xA05F
@@ -57,7 +56,8 @@ static const struct of_device_id versatile_reboot_of_match[]
= {
},
};
-static void versatile_reboot(enum reboot_mode mode, const char *cmd)
+static int versatile_reboot(struct notifier_block *this, unsigned long mode,
+ void *cmd)
{
/* Unlock the reset register */
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
@@ -87,12 +87,20 @@ static void versatile_reboot(enum reboot_mode mode, const
char *cmd)
break;
}
dsb();
+
+ return NOTIFY_DONE;
}
+static struct notifier_block versatile_reboot_nb = {
+ .notifier_call = versatile_reboot,
+ .priority = 192,
+};
+
static int __init versatile_reboot_probe(void)
{
const struct of_device_id *reboot_id;
struct device_node *np;
+ int err;
np = of_find_matching_node_and_match(NULL, versatile_reboot_of_match,
&reboot_id);
@@ -104,7 +112,10 @@ static int __init versatile_reboot_probe(void)
if (IS_ERR(syscon_regmap))
return PTR_ERR(syscon_regmap);
- arm_pm_restart = versatile_reboot;
+ err = register_restart_handler(&versatile_reboot_nb);
+ if (err)
+ return err;
+
pr_info("versatile reboot driver registered\n");
return 0;
}
--
2.1.0
--
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