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Sat, 08 Nov 2025 02:24:16 -0800 (PST) Received: from [192.168.0.104] ([106.219.179.230]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ba8ffe3616fsm7641324a12.19.2025.11.08.02.24.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Nov 2025 02:24:16 -0800 (PST) From: Manivannan Sadhasivam X-Google-Original-From: Manivannan Sadhasivam To: lpieralisi@kernel.org, kwilczynski@kernel.org, bhelgaas@google.com, Manivannan Sadhasivam Cc: will@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, robh@kernel.org, linux-arm-msm@vger.kernel.org, zhangsenchuan@eswincomputing.com, vincent.guittot@linaro.org In-Reply-To: <20251107044319.8356-1-manivannan.sadhasivam@oss.qualcomm.com> References: <20251107044319.8356-1-manivannan.sadhasivam@oss.qualcomm.com> Subject: Re: [PATCH v2 0/3] PCI: dwc: Check for device presence in suspend and resume Message-Id: <176259745262.10508.495485306102349892.b4-ty@kernel.org> Date: Sat, 08 Nov 2025 15:54:12 +0530 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.2 X-Proofpoint-GUID: ny-ckTTuq_OmqPiZgIRJlM0i4c92-x9r X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA4MDA4MyBTYWx0ZWRfX34gi8spjKdRj /hJliXee+0cSx64dH1QoMWiJ63j9Xb0FP3fAeuKkMODAreh2rIrg1VtLJ159xkz6DPoF1K83nck 0RA4KAwHFN3ywR1ci4EPmqQvQhdjOCasUngNEmdg8GHFkZR/Sfb8KgxRNK1G+qCl+FnKA5YxDE5 8HrdNlZEOgCQAhnQjj1Pwu+TEBsoNoze9wZKKYjiAoA4C8AMiqHsdaTgiFbiHFb6Q4SnOeKoDU8 sln/NkhWVerftg/+zqm97TQio31jkSEgesZYfFFA6flBXmQ1ia+pDwnI7bMZCfF2rVXPpYnnZw1 LXWInM+mLPFgigs4P4+qEwB9HwcwikJBmT4r14iQz/DFAB3icsjyMWu4vBSspxQQS+LNq5/rixd f3Wj5TA9ms75+ZDvuO1EuiVRqyMJsQ== X-Authority-Analysis: v=2.4 cv=V8xwEOni c=1 sm=1 tr=0 ts=690f1a52 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=qronr9GGDLuyXDLutoyxMA==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=5zNQnkP-R6VSWKDTgaQA:9 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-ORIG-GUID: ny-ckTTuq_OmqPiZgIRJlM0i4c92-x9r 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=2025-11-08_03,2025-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511080083 On Fri, 07 Nov 2025 10:13:16 +0530, Manivannan Sadhasivam wrote: > This series aims to fix the usage of dw_pcie_link_up() API to check for Link up > during system suspend. The motivation for this series comes from recent > discussions [1] [2], where developers wanted to skip PME_Turn_Off broadcast in > dw_pcie_suspend_noirq() API when devices are not attached to the bus. They ended > up using dw_pcie_link_up() to check for the device presence due to the bad > example in the pcie-qcom driver which does the same. The usage of > dw_pcie_link_up() API here would be racy as the link can go down at any time > after the check. > > [...] Applied, thanks! [1/3] PCI: host-common: Add an API to check for any device under the Root Ports commit: 64a4b36d229120a71ede91aed16519164a181c13 [2/3] PCI: qcom: Check for the presence of a device instead of Link up during suspend commit: b6811cd64ac54fb2426b6ce35ba7c63588402687 [3/3] PCI: dwc: Check for the device presence during suspend and resume commit: e8fe6b3413a1b92b4bc0f0182ea4b49ee369541b Best regards, -- Manivannan Sadhasivam