6.11-stable review patch. If anyone has any objections, please let me know.
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From: Krishna chaitanya chundru quic_krichai@quicinc.com
[ Upstream commit b94b05478fb6a09033bf70c6edd03f8930a0fe24 ]
When the PCIe devices are discovered late, the driver can't find the PCIe devices and returns in the init without registering with the bus notifier. Due to that the devices which are discovered late the driver can't register for this.
Register for bus notifier & driver even if the device is not found as part of init.
Fixes: af9597adc2f1 ("drivers/perf: add DesignWare PCIe PMU driver") Signed-off-by: Krishna chaitanya chundru quic_krichai@quicinc.com Reviewed-by: Yicong Yang yangyicong@hisilicon.com Link: https://lore.kernel.org/r/20240816-dwc_pmu_fix-v2-3-198b8ab1077c@quicinc.com Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/perf/dwc_pcie_pmu.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/perf/dwc_pcie_pmu.c b/drivers/perf/dwc_pcie_pmu.c index 85a5155d60180..f205ecad2e4c0 100644 --- a/drivers/perf/dwc_pcie_pmu.c +++ b/drivers/perf/dwc_pcie_pmu.c @@ -726,7 +726,6 @@ static struct platform_driver dwc_pcie_pmu_driver = { static int __init dwc_pcie_pmu_init(void) { struct pci_dev *pdev = NULL; - bool found = false; int ret;
for_each_pci_dev(pdev) { @@ -738,11 +737,7 @@ static int __init dwc_pcie_pmu_init(void) pci_dev_put(pdev); return ret; } - - found = true; } - if (!found) - return -ENODEV;
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "perf/dwc_pcie_pmu:online",