extcon: Fix error handling in extcon_dev_register

[ Upstream commit d3bdd1c3140724967ca4136755538fa7c05c2b4e ]

When devm_kcalloc() fails, we should execute device_unregister()
to unregister edev->dev from system.

Fixes: 046050f6e623e ("extcon: Update the prototype of extcon_register_notifier() with enum extcon")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index d0e367959c916b05fbcce4e69794891563f7357f..20e24d4b917abdd4a170d1fc8f3a574301191cc5 100644 (file)
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -1200,6 +1200,7 @@ int extcon_dev_register(struct extcon_dev *edev)
                        sizeof(*edev->nh) * edev->max_supported, GFP_KERNEL);
        if (!edev->nh) {
                ret = -ENOMEM;
+               device_unregister(&edev->dev);
                goto err_dev;
        }