target/linux/generic/backport-5.15/728-v6.1-02-net-ethernet-mtk_eth_wed-add-missing-put_device-in-m.patch

   1 From 9d4f20a476ca57e4c9246eb1fa2a61bea2354720 Mon Sep 17 00:00:00 2001
   2 From: Yang Yingliang <yangyingliang@huawei.com>
   3 Date: Mon, 17 Oct 2022 11:51:55 +0800
   4 Subject: [PATCH 2/3] net: ethernet: mtk_eth_wed: add missing put_device() in
   5  mtk_wed_add_hw()
   6
   7 After calling get_device() in mtk_wed_add_hw(), in error path, put_device()
   8 needs be called.
   9
  10 Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
  11 Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
  12 Signed-off-by: David S. Miller <davem@davemloft.net>
  13 ---
  14  drivers/net/ethernet/mediatek/mtk_wed.c | 10 ++++++++--
  15  1 file changed, 8 insertions(+), 2 deletions(-)
  16
  17 --- a/drivers/net/ethernet/mediatek/mtk_wed.c
  18 +++ b/drivers/net/ethernet/mediatek/mtk_wed.c
  19 @@ -1084,11 +1084,11 @@ void mtk_wed_add_hw(struct device_node *
  20         get_device(&pdev->dev);
  21         irq = platform_get_irq(pdev, 0);
  22         if (irq < 0)
  23 -               return;
  24 +               goto err_put_device;
  25
  26         regs = syscon_regmap_lookup_by_phandle(np, NULL);
  27         if (IS_ERR(regs))
  28 -               return;
  29 +               goto err_put_device;
  30
  31         rcu_assign_pointer(mtk_soc_wed_ops, &wed_ops);
  32
  33 @@ -1131,8 +1131,14 @@ void mtk_wed_add_hw(struct device_node *
  34
  35         hw_list[index] = hw;
  36
  37 +       mutex_unlock(&hw_lock);
  38 +
  39 +       return;
  40 +
  41  unlock:
  42         mutex_unlock(&hw_lock);
  43 +err_put_device:
  44 +       put_device(&pdev->dev);
  45  }
  46
  47  void mtk_wed_exit(void)