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Message-ID: <CACKFLinuFebDgJN=BgK5e-bNaFqNpk61teva0=2xMH6R_iT39g@mail.gmail.com>
Date: Wed, 31 Jul 2019 10:58:38 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: Chuhong Yuan <hslester96@...il.com>
Cc: "David S . Miller" <davem@...emloft.net>,
Netdev <netdev@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] cnic: Use refcount_t for refcount
On Wed, Jul 31, 2019 at 5:22 AM Chuhong Yuan <hslester96@...il.com> wrote:
> static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
> @@ -494,7 +494,7 @@ int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
> }
> read_unlock(&cnic_dev_lock);
>
> - atomic_set(&ulp_ops->ref_count, 0);
> + refcount_set(&ulp_ops->ref_count, 0);
> rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
> mutex_unlock(&cnic_lock);
>
Willem's comment applies here too. The driver needs to be modified to
count from 1 to use refcount_t.
Thanks.
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