From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 90D791DFDAF for ; Thu, 9 Jul 2026 12:46:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783601169; cv=none; b=L4y56VHUR1NI5PDBrw9h3WwJYSsxXXajr0NyjLHbtoibKo9oudeynPxcmv7sibmwR49VR8jBcgIAg+RvgoC8cTX2k1ZDjrI2w/KgYYkLQA5LS7jPdDufpkFkK1DwwNdmS9dzsx+owMHX0TYmBy17xchq8HIKsG8mOIgjPz5BrzM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783601169; c=relaxed/simple; bh=/iG9LaEOOKZae4ol1OEca4VnoqsdZ/YxkgR30xJdOu0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=CpEBd+nIsbVm8IQsN2JRT1bYp6FlLPpHkGWNqO9WHnJMsjkYevl5bdvCwABBBgMiuw4VUijfrVYdYZzQ96e+Taffd6ue4RGlQCgJltHbXqkF9PPXbqz46NXTByHUSxrpAHJ+EJHKMesE3v2TrekywCwS4LxjG7Jti52cnnqqOV0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=L0/y0OAl; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=WNYNeNy0; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="L0/y0OAl"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="WNYNeNy0" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 669BNDMn1628455 for ; Thu, 9 Jul 2026 12:46:03 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= vhHFYSLcv+6lYQ28t2RolA7btajCBASXtU6eML3rNHg=; b=L0/y0OAl+AJJOS7f w1PWvdtiYchzvRoPPGZqJ5PC98dZZjGkwHWPnmyI6lPB4JZ+Ch5QzTuUsb8GAI3S uoOyMLGYwDBqyN8db+oziIhRKWnYKbKIYpB4Ugdo5K906W+JosP8C/9peN2Uic+6 FrUTAqylERxjEUAC8DmesG62n6SDOCQ218Ur2HHgA0OdxxF/3QFMpg4n4HUH1DXo pW0BKIKVtQmUVYkWNrYqohMTHT1rT8KyUjqW+tA+tTm319j4f3QpsHe8QNaOfi/j 80OoPdp1MGq2xuPTsx2olI93kDkLY+qvmWo8xaiC8KuMDkvJEPhRkOO05CRYVxZ5 Amnd3w== Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4f9urvupbp-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 09 Jul 2026 12:46:02 +0000 (GMT) Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-c9fe4c5eb39so1419357a12.1 for ; Thu, 09 Jul 2026 05:46:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1783601162; x=1784205962; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=vhHFYSLcv+6lYQ28t2RolA7btajCBASXtU6eML3rNHg=; b=WNYNeNy02E0dUknscEyLdj2ea2RVm6lv0wjI6LtGz+S4iXX6ld9vjxthxwSMaw2Yyp 8LnDuNGHmvwUth2y3XYKfNcNCowtrn9nRnwyGCnM1/tXRGn7MUckFDORpwr/mn8lxigK YCleCeRc5B0H+AtwSOwBjzJRl+T+WrbI7kEF+FoyVpV0lp+ZR9O+gRR9tcY2KskM1wBB uNiARfXHsYUgwokR2LltuyAolUAjWRuKIT1oz5GYnrlRi2xMgtVnoyEyCOKJuNEzxAPZ 2Qkg3RoBuczE7VZJTiKyGkoUwMj8nei6oThlFCmiq2SudPwDhup4ZU0UdrlHXDEzG+6P yPBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783601162; x=1784205962; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=vhHFYSLcv+6lYQ28t2RolA7btajCBASXtU6eML3rNHg=; b=DGQXxjE72pdUYuW0KpWfpm92GT0ozL6rHLcBOEcD+ZtcjMS8+lQcWsPEbvEVh7lC66 vyO4EwYCB5gE0oca0volFgNYZwK4RcYChoZYqMJq2rvAQY42p82NalNnY33RtdkEZ/n9 sSkkKMh9b5SxWtzVOXsIlXo422ElAbWqGA/OJndxV5gM5SQP4ZvpaHIbe4B0dKR50mns 6JyPeWbbJkXc2HSyPDb4hR9w4WFvCUgS+zw32boJ6gg3VIb9h5tuQzLNxP+HVCqTmTvS Ve6Ro0E6J2rcYLYhVoqFU9ku+YDGSZN6TA3e6yYXP3mGrWaMswwPkAX/JymCZvdvCEor hKoA== X-Forwarded-Encrypted: i=1; AHgh+RoY4A5PN6ZlrSPJJjVPU5rrAVpryf/DTR9ox1kSl9LV+IUhbZ/XUrWRTD6yS/M/neJ2a+v7mdYu5NXD0aU=@vger.kernel.org X-Gm-Message-State: AOJu0YzPHKviFsZU2BfwICmuqbKlkK0vTEXBXuaiGt/7BDms7EPHEh4E 5zW25utFKfTp8lQ+kZHuf+f4ANfDH6B8RlTSeWfwwX38eS+DbBHragKlswXdCcf+2RCRYM9Rfez dkjDABW/h7KkU/uu6ugosHAfO9wBPPwRFuYBHMTQ/02+TMcVEGasVBg6LiwLxfQ6mstc= X-Gm-Gg: AfdE7cn3kbRthIGk0oA1M865biqWjcpU30a0NO1iBr1sf63sB/SOgkJyXvuUpHm4oFR 0aAgGKF25QxkfuA1jljT5KY3geGrKF3DhHZ5aRZl8H+x71Usl0MHgJeujGQ87w2S+D+nbX+9b+p FnWxHMN1A/Lli5iG0kaguAMMu2bbzeAqTgM/EckIDa3cxkfEYvqn3IEgS2QJ9EeLsJx757sDa7/ fKur7UrJybM6dNulZaIM0fWpyY21IBPVskUVV/kpvnlOdz9NlvZGlyQ/D5/vWvUGuK6TAtLcSjH fYaH3SVA5HOiyL9hSgcWMjCD4C2bC3pZJxO+bvZ0rwtv7cvhq6U/5QLcknWURiFFVFC7Sea9RUU NO91XdNayIl5CysXPXRnATghbP1qiEZjjIG4wZPZRCIw= X-Received: by 2002:a05:6a20:3ca3:b0:39f:acae:f12e with SMTP id adf61e73a8af0-3c0bced482bmr10459353637.22.1783601161847; Thu, 09 Jul 2026 05:46:01 -0700 (PDT) X-Received: by 2002:a05:6a20:3ca3:b0:39f:acae:f12e with SMTP id adf61e73a8af0-3c0bced482bmr10459285637.22.1783601161268; Thu, 09 Jul 2026 05:46:01 -0700 (PDT) Received: from [192.168.0.6] ([49.204.111.130]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31174ac178dsm31739101eec.28.2026.07.09.05.45.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Jul 2026 05:46:00 -0700 (PDT) Message-ID: Date: Thu, 9 Jul 2026 18:15:48 +0530 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/6] tty: serial: propagate errors from uart_ops.pm callback To: Andy Shevchenko Cc: Jiri Slaby , Greg Kroah-Hartman , =?UTF-8?Q?Ilpo_J=C3=A4rvinen?= , Matthias Brugger , AngeloGioacchino Del Regno , Richard Genoud , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Krzysztof Kozlowski , Peter Griffin , Alim Akhtar , Orson Zhai , Baolin Wang , Chunyan Zhang , Patrice Chotard , Maxime Coquelin , Alexandre Torgue , Peter Korsgaard , Michal Simek , Aaro Koskinen , Janusz Krzysztofik , Tony Lindgren , Russell King , Thomas Bogendoerfer , bjorn.andersson@oss.qualcomm.com, Konrad Dybcio , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-omap@vger.kernel.org, linux-mips@vger.kernel.org, Mukesh Kumar Savaliya , aniket.randive@oss.qualcomm.com, chandana.chiluveru@oss.qualcomm.com References: <20260709-add_return_check_for_uart_change_pm-v1-0-e85c6ffa8ec4@oss.qualcomm.com> <9320a573-ebf8-459b-a313-3a8b73a6180b@kernel.org> <5eecf3a0-b608-4057-b400-236f6952b380@oss.qualcomm.com> Content-Language: en-US From: Praveen Talari In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA5MDEyMyBTYWx0ZWRfX1CKIzmPHUEz5 6/o2V6DI0Ful/IWOqhohmrGxvc4iiXqPQKMbNqG1xw/I665hQIBtgKV3LCGaNOTggEBvoCpK1LO o2mk9VbgE7GfO5BqCOfuZzp64kDldPw= X-Proofpoint-GUID: yziV6bQ0D3HOgogv_bvsD7EZc3wNB-wk X-Proofpoint-ORIG-GUID: yziV6bQ0D3HOgogv_bvsD7EZc3wNB-wk X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA5MDEyMyBTYWx0ZWRfX8/mkp35vrhw2 lIfsE/E38ZIkVTG7IMrnKTtfzMYkBdqxWYGqIHJCkBcJEnP/TYotRi6drbDS3WCpr3dbbFW4ijZ 40cjPn7dFt2b8qe7iG4L/noWz3gE8ZKixWpBNpJDJvAJWFjTdezcgPDLV1KdmzJhjKoiDO0J5nd VICmXYy2GMzqrPqUE31tWDPbHJzYhIqUqAGulOTfpHVEvgqhSzIfMENclyviJkHj42DGAjNoa6C VwOJwQmsjS4SE8GyXN2ErzOrE1ADDMr83bdAyrx97D0gKpKGVg4U6RCq/cWVV5EODWWPaotGM1m M7IRQN4ekmKKGTGvm+RR2k6Dq9oj/gsZiJF1x1LE2uZTFT3GwBwmcEcIROXOlEZjuwpujiime4K XKmB/UBEnE0qhiiZdaTX5fj1Lh4m2Gjvg+S1wQLhjKguVMz+5C08dBRsj+vRuldAQzbQ9jpgDbX AtiOaBGyH7FtMMom4HA== X-Authority-Analysis: v=2.4 cv=H43rBeYi c=1 sm=1 tr=0 ts=6a4f980a cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=vz+FLylpEn3mlzyIWlmD3A==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=2TZWhx8y46JuiruMumEA:9 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-09_02,2026-07-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 adultscore=0 spamscore=0 phishscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607090123 Hi Andy On 09-07-2026 15:46, Andy Shevchenko wrote: > On Thu, Jul 09, 2026 at 02:22:17PM +0530, Praveen Talari wrote: >> On 09-07-2026 12:23, Jiri Slaby wrote: >>> On 09. 07. 26, 8:25, Praveen Talari wrote: > ... > >>> OK, now I miss the rationale behind the patchset. Neither there is a >>> possible code path to actually test this? >> The rationale is that qcom_geni_serial_pm() calls >> pm_runtime_resume_and_get() which can fail, but its return value is >> currently discarded because the callback is void. > So, you take the solution from a wrong end. Just get rid of .pm() in your driver. Ok I agree. Now i can control resources via PM runtime APIs from startup(get_sync()) and shutdown(put_sync()) APIs right? Thanks, Praveen Talari > With that, problem solved. Really, this series is a road to even more broken > PM solutions. >