From patchwork Sat Oct 5 12:15:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 833153 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E33CF22318 for ; Sat, 5 Oct 2024 12:15:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728130541; cv=none; b=uytS0NKzEFO7XS8nymNA/5lZSL7pU7ZUrNRKktGpc6g1hnrdOXgkwM5pntvbmDta0/dfmQ5hBw4D7BDD/U35K1e9HiGjCbHco7H34hva5pEixrsnjED6bZby0JfdP5V7FOJronqLEWu+XBUDokhibJRFKVXJ7t+vjO3vxc3s9m8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728130541; c=relaxed/simple; bh=Wjz3P/Z8uXiamuWAV3rU8kHL11hfIRgMzalR8gKIKKE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iuaVKcXrkPhG74u0rH2Mq7uNSw4WpIPQMwUIgCcYShzZmj9KPDUE+Yh6lYtF/RkkP7tWxIsBBaJl0bWil7akj4S8z48Ql1uhOg6tTBq4tH5W9GKkfrNwKwQ/ZqmaTSd2Offv1Obqjt/oZ9ymnYjLLohpoqroonugpBBfERbaNKg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=XZEbJ5KV; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XZEbJ5KV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1728130538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qBb7pxcFZznXYVyh1jtZaUCQQPBm9CrNZYxR0moz+/Q=; b=XZEbJ5KV7pOnee2mOT1PjofOfbDulrKqP8G1ZpcaZ6tPc86gQcZZVNMz5Yl6q2LvLwjsrU 6tQHiPamxQ4BEwJ6xnoG9cWuBNd1BgaLTUfvzfqVXxkZUNnI9osNTAt5lqGT7Eeni4HCrP 77GCk1r8IBsaqZLmh573ox+POI0NHko= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-497-h4rNNykDM1uGhxN6m0LB8A-1; Sat, 05 Oct 2024 08:15:37 -0400 X-MC-Unique: h4rNNykDM1uGhxN6m0LB8A-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 014451954B16; Sat, 5 Oct 2024 12:15:36 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.19]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 6AFC219560A3; Sat, 5 Oct 2024 12:15:34 +0000 (UTC) From: Hans de Goede To: Daniel Scally , Sakari Ailus Cc: Hans de Goede , Mauro Carvalho Chehab , linux-media@vger.kernel.org Subject: [PATCH 2/4] media: ov7251: Improve error logging when fwnode is not found Date: Sat, 5 Oct 2024 14:15:23 +0200 Message-ID: <20241005121525.32172-2-hdegoede@redhat.com> In-Reply-To: <20241005121525.32172-1-hdegoede@redhat.com> References: <20241005121525.32172-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 The ov7251 driver waits for the endpoint fwnode to show up in case this fwnode is created by a bridge-driver. It does this by returning -EPROBE_DEFER, but it does not use dev_err_probe() so no reason for deferring gets registered. After 30 seconds the kernel logs a warning that the probe is still deferred, which looks like this: [ 33.952052] i2c i2c-INT347E:00: deferred probe pending: (reason unknown) Use dev_err_probe() when returning -EPROBE_DEFER to register the probe deferral reason changing the error to: deferred probe pending: waiting for fwnode graph endpoint Also update the comment to not refer to the no longer existing cio2-bridge code. Signed-off-by: Hans de Goede --- drivers/media/i2c/ov7251.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/ov7251.c b/drivers/media/i2c/ov7251.c index 30f61e04ecaf..c417af01f194 100644 --- a/drivers/media/i2c/ov7251.c +++ b/drivers/media/i2c/ov7251.c @@ -1484,9 +1484,14 @@ static int ov7251_check_hwcfg(struct ov7251 *ov7251) unsigned int i, j; int ret; + /* + * Sometimes the fwnode graph is initialized by the bridge driver + * Bridge drivers doing this may also add GPIO mappings, wait for this. + */ endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!endpoint) - return -EPROBE_DEFER; /* could be provided by cio2-bridge */ + return dev_err_probe(ov7251->dev, -EPROBE_DEFER, + "waiting for fwnode graph endpoint\n"); ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg); fwnode_handle_put(endpoint);