[PATCH 4.4 52/73] power: reset: hisi-reboot: Unmap region obtained by of_iomap

Greg Kroah-Hartman
2016-09-28T09:30:01Z

From: Arvind Yadav <arvind.yadav.cs@gmail.com>

commit bae170efd6c42bf116f513a1dd07639d68fa71b9 upstream.

Free memory mapping, if probe is not successful.

Fixes: 4a9b37371822 ("power: reset: move hisilicon reboot code")
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/power/reset/hisi-reboot.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -53,13 +53,16 @@ static int hisi_reboot_probe(struct plat

if (of_property_read_u32(np, "reboot-offset", &reboot_offset) < 0) {
pr_err("failed to find reboot-offset property\n");
+ iounmap(base);
return -EINVAL;
}

err = register_restart_handler(&hisi_restart_nb);
- if (err)
+ if (err) {
dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n",
err);
+ iounmap(base);
+ }

return err;
}