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[2001:1c00:c32:7800:5bfa:a036:83f0:f9ec]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037a5bdb9sm3776086266b.7.2025.12.30.09.03.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Dec 2025 09:03:26 -0800 (PST) From: Hans de Goede Date: Tue, 30 Dec 2025 18:03:10 +0100 Subject: [PATCH v5 13/14] 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: <20251230-mt9m114-atomisp-v5-13-763539e76094@oss.qualcomm.com> References: <20251230-mt9m114-atomisp-v5-0-763539e76094@oss.qualcomm.com> In-Reply-To: <20251230-mt9m114-atomisp-v5-0-763539e76094@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-Authority-Analysis: v=2.4 cv=POcCOPqC c=1 sm=1 tr=0 ts=695405e0 cx=c_pps a=g1v0Z557R90hA0UpD/5Yag==: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=MFSWADHSvvjO3QEy5MdX:22 a=D0XLA9XvdZm18NrgonBM:22 X-Proofpoint-ORIG-GUID: zcFX7aKwmIwuB2tm-sF8eDbZy9UIy7Lx X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjMwMDE1MyBTYWx0ZWRfXyz7n/jWXhfXV oSIkmnbkM97W+9EyWpmqX/IwoZ//yI2HZTSr23Zz76LJCc0d2M18sYSKTtldzMjMt3xXb0XW2XT PijzXYX7MYnq0A3IRar1oXItitYQ0b7R9AiW3WXwjuKThzLB1qG8TJtBqKH2OcYJeA3kgwNIlRD 09yUqnB9y2rhOPrkLwQR14lnku7fPtYY9aT46/gM4ESY6rYJB3kjg8MHLoXyo3eT7/WOqmQ31x/ hV/+cVTUbm5tiF0Dg1l/Q26OZe8L6rfn/i3dN4vWtpDYt3LeQuq7M+lv+h2Iuazb18h7xP2VaGu d7SLEfCUFX30ntEpmX7LJKiimREA9kPwbWjFr9RvDSbX7pKZP6T7ma2xdbspTgLht+AvXjYEyiJ RsRk1+uKtTfFjKDCNfcIK6Uz9Ox9OHWawdi24VhQck71VnMvY5XsbexYXfho7FgNsp2yCx0N+qp 98D2whrJsC2rt0QwxQg== X-Proofpoint-GUID: zcFX7aKwmIwuB2tm-sF8eDbZy9UIy7Lx 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=2025-12-30_02,2025-12-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 bulkscore=0 phishscore=0 clxscore=1015 priorityscore=1501 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512300153 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 18fcf1a105a4268a501f517a155f12def0753929..9712d61ab9512f3b8ff31423afb= 81b61bc3bdaef 100644 --- a/drivers/media/i2c/mt9m114.c +++ b/drivers/media/i2c/mt9m114.c @@ -2460,11 +2460,17 @@ 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