Register with kernel restart handler instead of setting arm_pm_restart directly.
This patch also addresses the following compile warning.
drivers/power/reset/xgene-reboot.c: In function 'xgene_reboot_probe':
drivers/power/reset/xgene-reboot.c:77:17: warning:
assignment from incompatible pointer type [enabled by default]
The warning was due to a mismatch between the type of arm_pm_restart
and the restart function.
Cc: Loc Ho <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
---
drivers/power/reset/xgene-reboot.c | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/drivers/power/reset/xgene-reboot.c
b/drivers/power/reset/xgene-reboot.c
index ae470b8..1e7f5f5 100644
--- a/drivers/power/reset/xgene-reboot.c
+++ b/drivers/power/reset/xgene-reboot.c
@@ -26,32 +26,36 @@
*/
#include <linux/delay.h>
#include <linux/io.h>
+#include <linux/notifier.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
+#include <linux/reboot.h>
#include <linux/stat.h>
#include <linux/slab.h>
-#include <asm/system_misc.h>
struct xgene_reboot_context {
struct device *dev;
void *csr;
u32 mask;
+ struct notifier_block restart_handler;
};
-static struct xgene_reboot_context *xgene_restart_ctx;
-
-static void xgene_restart(char str, const char *cmd)
+static int xgene_restart_handler(struct notifier_block *this,
+ unsigned long mode, void *cmd)
{
- struct xgene_reboot_context *ctx = xgene_restart_ctx;
+ struct xgene_reboot_context *ctx =
+ container_of(this, struct xgene_reboot_context,
+ restart_handler);
/* Issue the reboot */
- if (ctx)
- writel(ctx->mask, ctx->csr);
+ writel(ctx->mask, ctx->csr);
mdelay(1000);
dev_emerg(ctx->dev, "Unable to restart system\n");
+
+ return NOTIFY_DONE;
}
static int xgene_reboot_probe(struct platform_device *pdev)
@@ -73,8 +77,11 @@ static int xgene_reboot_probe(struct platform_device *pdev)
ctx->mask = 0xFFFFFFFF;
ctx->dev = dev;
- arm_pm_restart = xgene_restart;
- xgene_restart_ctx = ctx;
+ ctx->restart_handler.notifier_call = xgene_restart_handler;
+ ctx->restart_handler.priority = 128;
+ err = register_restart_handler(&ctx->restart_handler);
+ if (err)
+ dev_err(dev, "cannot register restart handler (err=%d)\n", err);
return 0;
}
--
1.9.1
--
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