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Thread-Topic: [kbuild] drivers/net/ethernet/mscc/ocelot_vsc7514.c:554 ocelot_xtr_irq_handler() error: uninitialized symbol 'err'. 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charset="us-ascii" Content-ID: <687559FFC5A0EA42B8A0C7191A9F204D@eurprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: VI1PR04MB5136.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 45e7968d-90dd-4848-0569-08d96971fd02 X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Aug 2021 15:47:34.5555 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: wu81rbpS0tuctwj3vBtSBqhqal7VwtnC1Fx9IlxcTt9a99uRZLgBzOVUnTurlXAORegm4Zc/Q5yyby8IsuhQiw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB2862 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 27, 2021 at 10:06:42AM +0300, Dan Carpenter wrote: > static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg) > { > struct ocelot *ocelot =3D arg; > int grp =3D 0, err; > > while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) { > > Can this condition be false on the first iteration through the loop? Functionally speaking, no, but if it helps anyone to initialize "err" with 0, I guess we could... > > struct sk_buff *skb; > > err =3D ocelot_xtr_poll_frame(ocelot, grp, &skb); > if (err) > goto out; > > skb->dev->stats.rx_bytes +=3D skb->len; > skb->dev->stats.rx_packets++; > > if (!skb_defer_rx_timestamp(skb)) > netif_rx(skb); > } > > out: > if (err < 0) > while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) > ocelot_read_rix(ocelot, QS_XTR_RD, grp); > > return IRQ_HANDLED; > }