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Wed, 18 Dec 2019 19:36:27 +0000 (UTC) Received: from thuth.remote.csb (ovpn-116-120.ams2.redhat.com [10.36.116.120]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5D5A219C58; Wed, 18 Dec 2019 19:36:21 +0000 (UTC) Subject: Re: [PATCH v2 4/6] hw/net/imx_fec: Rewrite fall through comments To: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , qemu-devel@nongnu.org References: <20191218192526.13845-1-philmd@redhat.com> <20191218192526.13845-5-philmd@redhat.com> From: Thomas Huth Openpgp: preference=signencrypt Message-ID: <4586faa9-31ed-d90c-730c-f6c32657dceb@redhat.com> Date: Wed, 18 Dec 2019 20:36:19 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191218192526.13845-5-philmd@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: z8cuo0vYOviCYyfeKs03mw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Jason Wang , Richard Henderson , qemu-arm@nongnu.org, Peter Chubb , Aleksandar Markovic Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 18/12/2019 20.25, Philippe Mathieu-Daud=C3=A9 wrote: > GCC9 is confused by this comment when building with CFLAG > -Wimplicit-fallthrough=3D2: >=20 > hw/net/imx_fec.c: In function =E2=80=98imx_eth_write=E2=80=99: > hw/net/imx_fec.c:906:12: error: this statement may fall through [-Werro= r=3Dimplicit-fallthrough=3D] > 906 | if (unlikely(single_tx_ring)) { > | ^ > hw/net/imx_fec.c:912:5: note: here > 912 | case ENET_TDAR: /* FALLTHROUGH */ > | ^~~~ > cc1: all warnings being treated as errors >=20 > Rewrite the comments in the correct place, using 'fall through' > which is recognized by GCC and static analyzers. >=20 > Reviewed-by: Richard Henderson > Reviewed-by: Aleksandar Markovic > Signed-off-by: Philippe Mathieu-Daud=C3=A9 > --- > Cc: Peter Chubb > Cc: Peter Maydell > Cc: Jason Wang > Cc: qemu-arm@nongnu.org > --- > hw/net/imx_fec.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >=20 > diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c > index bd99236864..c01ce4f078 100644 > --- a/hw/net/imx_fec.c > +++ b/hw/net/imx_fec.c > @@ -909,7 +909,8 @@ static void imx_eth_write(void *opaque, hwaddr offset= , uint64_t value, > TYPE_IMX_FEC, __func__); > return; > } > - case ENET_TDAR: /* FALLTHROUGH */ > + /* fall through */ > + case ENET_TDAR: > if (s->regs[ENET_ECR] & ENET_ECR_ETHEREN) { > s->regs[index] =3D ENET_TDAR_TDAR; > imx_eth_do_tx(s, index); >=20 Reviewed-by: Thomas Huth