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Thu, 13 Mar 2025 04:40:50 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFX0osURi3EPGsBhGonuGqBQDJB5s6R9Ee/fm3sZrU83VNV9iwXDBptbFr6kXXFDh+i9IOGIQ== X-Received: by 2002:a05:6a21:a8a:b0:1f5:535c:82d6 with SMTP id adf61e73a8af0-1f5535c862cmr38690595637.35.1741866050366; Thu, 13 Mar 2025 04:40:50 -0700 (PDT) Received: from hu-krichai-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af56ea964e3sm1063219a12.76.2025.03.13.04.40.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Mar 2025 04:40:50 -0700 (PDT) From: Krishna Chaitanya Chundru Date: Thu, 13 Mar 2025 17:10:08 +0530 Subject: [PATCH v2 01/10] PCI: update current bus speed as part of pci_bus_add_devices() Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250313-mhi_bw_up-v2-1-869ca32170bf@oss.qualcomm.com> References: <20250313-mhi_bw_up-v2-0-869ca32170bf@oss.qualcomm.com> In-Reply-To: <20250313-mhi_bw_up-v2-0-869ca32170bf@oss.qualcomm.com> To: Bjorn Helgaas , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Jingoo Han , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Johannes Berg , Jeff Johnson Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev, linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, quic_pyarlaga@quicinc.com, quic_vbadigan@quicinc.com, quic_vpernami@quicinc.com, quic_mrana@quicinc.com, Krishna Chaitanya Chundru , Jeff Johnson X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741866038; l=865; i=krishna.chundru@oss.qualcomm.com; s=20230907; h=from:subject:message-id; bh=kC8jbRyoGWHcr5F6bMdpdYEPmSroHXkD/t16CewXuhA=; b=ahY6Y0A168tVls7xeIA9KMyOy4DdXUlaSCT4aLtCvCoOwCqtVuPLJB4oihUbL9V6lKzs0jMIr YbHNVpW7tlaAw2nG6V5+CebfmNfg9kEZrPSIm76H9fmD5LPSKow5ily X-Developer-Key: i=krishna.chundru@oss.qualcomm.com; a=ed25519; pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg= X-Proofpoint-ORIG-GUID: JWmwgHyFy1FP7Xnph5CArIa6LSlETefd X-Proofpoint-GUID: JWmwgHyFy1FP7Xnph5CArIa6LSlETefd X-Authority-Analysis: v=2.4 cv=TIhFS0la c=1 sm=1 tr=0 ts=67d2c444 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=EUspDBNiAAAA:8 a=u3yxjsl3ZikD_R2semEA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-13_05,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxlogscore=951 mlxscore=0 clxscore=1015 bulkscore=0 malwarescore=0 suspectscore=0 spamscore=0 phishscore=0 impostorscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503130092 If the link is not up till the pwrctl drivers enable power to endpoints then cur_bus_speed will not be updated with correct speed. As part of rescan, pci_bus_add_devices() will be called and as part of it update the link bus speed. Signed-off-by: Krishna Chaitanya Chundru --- drivers/pci/bus.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 98910bc0fcc4..994879071d4c 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -432,6 +432,9 @@ void pci_bus_add_devices(const struct pci_bus *bus) struct pci_dev *dev; struct pci_bus *child; + if (bus->self) + pcie_update_link_speed((struct pci_bus *)bus); + list_for_each_entry(dev, &bus->devices, bus_list) { /* Skip already-added devices */ if (pci_dev_is_added(dev))