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Message-ID: <84700000098a32b0a1375ffde5a1a852072b93fd.camel@iki.fi>
Subject: Re: [PATCH] Bluetooth: Fix unused value warning in sco_sock_connect
From: Pauli Virtanen <pav@iki.fi>
To: Bharath SM <bharathsm.hsk@gmail.com>
Cc: linux-bluetooth@vger.kernel.org, Bharath SM <bharathsm@microsoft.com>
Date: Sat, 23 Mar 2024 11:51:36 +0200
In-Reply-To: <20240323072253.40816-1-bharathsm@microsoft.com>
References: <20240323072253.40816-1-bharathsm@microsoft.com>
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Hi,

la, 2024-03-23 kello 12:52 +0530, Bharath SM kirjoitti:
> Coverity complains of an unused value:
>=20
> CID 1528147: (#1 of 1): Unused value (UNUSED_VALUE)
> assigned_value: Assigning value -22 to err here, but that stored
> value is overwritten before it can be used.
> 	err =3D -EINVAL;
>=20
> Fix it by removing the assignment.
>=20
> Signed-off-by: Bharath SM <bharathsm@microsoft.com>
> ---
>  net/bluetooth/sco.c | 3 ---
>  1 file changed, 3 deletions(-)
>=20
> diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
> index 43daf965a01e..e74bce4e1d6c 100644
> --- a/net/bluetooth/sco.c
> +++ b/net/bluetooth/sco.c
> @@ -581,9 +581,6 @@ static int sco_sock_connect(struct socket *sock, stru=
ct sockaddr *addr, int alen
>  	if (sk->sk_state !=3D BT_OPEN && sk->sk_state !=3D BT_BOUND)
>  		return -EBADFD;
> =20
> -	if (sk->sk_type !=3D SOCK_SEQPACKET)
> -		err =3D -EINVAL;
> -

It should return -EINVAL here, not remove the check.

Looks like it got broken in 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 in
the locking refactoring.

>  	lock_sock(sk);
>  	/* Set destination address and psm */
>  	bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);

--=20
Pauli Virtanen