From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 2746B23C516; Thu, 25 Jun 2026 13:24:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782393854; cv=none; b=rhBHCNeLWWNr5e2hdrnqX8FpcQiRN1c8+ssZeZlpisVIyHs70hJ3Eyj3ogouBtacbE9ovEHCrcEwQ/sxKVmQ9pV+eVlNSy2DYvl9QknwQ/qZuIIqX0EvWbjrW+YdlHuJOjwo3KtC3fkTc35hiAILmJXHdmPKceBZD2th4hWaxAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782393854; c=relaxed/simple; bh=102LCPgJjx+JWdv//oxmgth8OWv+HBdntHfiqsGSX4M=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=DYqeC9Ms98HWSlibpef7WT6OSCOyc1njr+axpt6zXK3OGB0dk3OwjoFQ8WmkAewoNzSjfjXDvy9O4OnvixQguyL66Jq9lbnStM02US5hSTzVhaXcq2TOyZdnkxZMsqC3B5Z344i+fAhckFyf3OHD7MJ+RtucKKRfZYwD7V9dMd4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WL9yKn3z; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WL9yKn3z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A684F1F000E9; Thu, 25 Jun 2026 13:24:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782393852; bh=pNvgr8gg/LWeKLpjg+r/5l2Sh5dtcCecwb692W9q8rA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=WL9yKn3zJ6tTsUrVT3wK4X6ZfxvRd7vQMFp643WGVYmgN1a2DMT5nUaYW3/gUFn8K kwgenfpDXTkf5F+9Fm7p6kyxQ7gGlNOgp2VCSPMo/xsiHM/fQWnad2of1Oha8rF+tk Grdcq3OUGo/yTG7HSZ3RR3EwNeoful3fb2Cn3nTE4s9PIQN6kpN+jGTdQvRtG431iN 9w0E6G5i/CuHJNoOCgZiXpULC9TUaq0GN21fBUDIzsPYPTSd08myibU2rGxVBo0CVe Ayr17oL2hnd2g4KNpCThRHU7VUVWXqMmw+yEauuz9qCpbb4b/zKckZ4uYSTybjLWzY c0MB1A5d6Q7kA== Message-ID: <7597d9b3-7e55-4b14-a34a-b24b2436e349@kernel.org> Date: Thu, 25 Jun 2026 15:24:02 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 2/2] drm/bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver To: syyang@lontium.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andrzej.hajda@intel.com, neil.armstrong@linaro.org, dmitry.baryshkov@oss.qualcomm.com, maarten.lankhorst@linux.intel.com, rfoss@kernel.org, mripard@kernel.org Cc: Laurent.pinchart@ideasonboard.com, tzimmermann@suse.de, jonas@kwiboo.se, jernej.skrabec@gmail.com, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, yangsunyun1993@gmail.com, xmzhu@lontium.corp-partner.google.com, xmzhu@lontium.com, rlyu@lontium.com, xbpeng@lontium.com References: <20260508134009.4582-1-syyang@lontium.com> <20260508134009.4582-3-syyang@lontium.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 08/05/2026 15:40, syyang@lontium.com wrote: > + > +static int lt9611c_probe(struct i2c_client *client) > +{ > + const struct i2c_device_id *id = i2c_client_get_device_id(client); > + struct lt9611c *lt9611c; > + struct device *dev = &client->dev; > + bool fw_updated = false; > + int ret; > + > + crc8_populate_msb(lt9611c_crc8_table, LT9611C_CRC_POLYNOMIAL); > + > + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) > + return dev_err_probe(dev, -ENODEV, "device doesn't support I2C\n"); > + > + lt9611c = devm_drm_bridge_alloc(dev, struct lt9611c, bridge, <9611c_bridge_funcs); > + if (IS_ERR(lt9611c)) > + return dev_err_probe(dev, PTR_ERR(lt9611c), "drm bridge alloc failed.\n"); > + > + lt9611c->dev = dev; > + lt9611c->client = client; > + lt9611c->chip_type = id->driver_data; Also, NULL pointer exception here. With simple look I found at least two easy to reproduce and trigger bugs which makes me questioning how did you test it. Best regards, Krzysztof