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[2001:1c00:c32:7800:5bfa:a036:83f0:f9ec]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037f0b12dsm1750304066b.48.2025.12.24.04.31.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Dec 2025 04:31:31 -0800 (PST) From: Hans de Goede Date: Wed, 24 Dec 2025 13:31:23 +0100 Subject: [PATCH v4 14/15] media: mt9m114: Return -EPROBE_DEFER if no endpoint is found Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251224-mt9m114-atomisp-v4-14-60b25da7a1bc@oss.qualcomm.com> References: <20251224-mt9m114-atomisp-v4-0-60b25da7a1bc@oss.qualcomm.com> In-Reply-To: <20251224-mt9m114-atomisp-v4-0-60b25da7a1bc@oss.qualcomm.com> To: Laurent Pinchart , Mauro Carvalho Chehab , Sakari Ailus Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Laurent Pinchart , Hans de Goede X-Mailer: b4 0.14.2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjI0MDEwOSBTYWx0ZWRfX4KJR/UZb8xEC Lvaq+wQMEMMT34VzKU+2ZGt3Nl3jt1Ntk7H4zAuR7phs/JGwwt7o/habXsjTNhbLfsrWthUlEqt ohhorR9XZAschn7nOBKm42sAQ69vlPs9rONqrYwW8UrZtDKIkSA1BXMX8/pp7k84i8YpFuzNvrO cqLDEz2xgTPgX1jwygbp7Fd/hQgSHoabI8Jk7TK1zfwf2/mg4uK9Q8PpZjXDWsNI9Y3L3ShkcNB eravQuKzfieRMStMWItTwBrtbKp3F/xCq6tUSfkOrlrEpv9+pw0Rd0XIRyoRb0LMivpkYTi6RWU C83uw+jBBaqKEh3lkEXr/uoSFv5ffsli+IxSyf05qshZZzf5h7IBz+B3NEDjiMmLZ4b6VUTRi4k WnMgR+1x3p9QATWR5ypurMXZnxNMVh+1MCo1liRF/mmjUTZcMsaboG1OvuSDMv3T+SEwP4uCVW4 YFrd6Ms09KKNrHne6WA== X-Proofpoint-ORIG-GUID: YzR-QYmoe19d7-HOPQgL9Go4kP5c9g0H X-Authority-Analysis: v=2.4 cv=YcqwJgRf c=1 sm=1 tr=0 ts=694bdd25 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=P1BnusSwAAAA:8 a=EUspDBNiAAAA:8 a=tX04M20y6pLIItW2OsUA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 a=D0XLA9XvdZm18NrgonBM:22 X-Proofpoint-GUID: YzR-QYmoe19d7-HOPQgL9Go4kP5c9g0H X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-24_03,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 clxscore=1015 bulkscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512240109 With IPU# bridges, endpoints may only be created when the IPU bridge is initialized. This may happen after the sensor driver's first probe(). Reviewed-by: Laurent Pinchart Signed-off-by: Hans de Goede --- Changes in v4: - Update comment about why EPROBE_DEFER handling is necessary --- drivers/media/i2c/mt9m114.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/media/i2c/mt9m114.c b/drivers/media/i2c/mt9m114.c index 41e98f719a23045293ee47d8980675510a142afa..9bf900095515447d22265521349= cce1d7892e9b8 100644 --- a/drivers/media/i2c/mt9m114.c +++ b/drivers/media/i2c/mt9m114.c @@ -2448,11 +2448,17 @@ static int mt9m114_parse_dt(struct mt9m114 *sensor) struct fwnode_handle *ep; int ret; =20 + /* + * On ACPI systems the fwnode graph can be initialized by a bridge + * driver, which may not have probed yet. Wait for this. + * + * TODO: Return an error once bridge driver code will have moved + * to the ACPI core. + */ ep =3D fwnode_graph_get_next_endpoint(fwnode, NULL); - if (!ep) { - dev_err(&sensor->client->dev, "No endpoint found\n"); - return -EINVAL; - } + if (!ep) + return dev_err_probe(&sensor->client->dev, -EPROBE_DEFER, + "waiting for fwnode graph endpoint\n"); =20 sensor->bus_cfg.bus_type =3D V4L2_MBUS_UNKNOWN; ret =3D v4l2_fwnode_endpoint_alloc_parse(ep, &sensor->bus_cfg); --=20 2.52.0