This is a note to let you know that I've just added the patch titled cpufreq: amd_freq_sensitivity: Add missing pci_dev_put() to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: cpufreq-amd_freq_sensitivity-add-missing-pci_dev_put.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit d9ea82866c73bd32343d80538e830d58dea96528 Author: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx> Date: Wed Nov 16 19:33:39 2022 +0800 cpufreq: amd_freq_sensitivity: Add missing pci_dev_put() [ Upstream commit 91fda1f88c0968f1491ab150bb01690525af150a ] pci_get_device() will increase the reference count for the returned pci_dev. We need to use pci_dev_put() to decrease the reference count after using pci_get_device(). Let's add it. Fixes: 59a3b3a8db16 ("cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ") Signed-off-by: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c index 4b4f128c3488..cacd4c67d9be 100644 --- a/drivers/cpufreq/amd_freq_sensitivity.c +++ b/drivers/cpufreq/amd_freq_sensitivity.c @@ -122,6 +122,8 @@ static int __init amd_freq_sensitivity_init(void) if (!pcidev) { if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK)) return -ENODEV; + } else { + pci_dev_put(pcidev); } if (rdmsrl_safe(MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, &val))