From: Xiongfeng Wang wangxiongfeng2@huawei.com
[ Upstream commit 1ff9dd6e7071a561f803135c1d684b13c7a7d01d ]
pci_get_device() will increase the reference count for the returned 'dev'. We need to call pci_dev_put() to decrease the reference count. Since 'dev' is only used in pci_read_config_dword(), let's add pci_dev_put() right after it.
Fixes: 9d480158ee86 ("perf/x86/intel/uncore: Remove uncore extra PCI dev HSWEP_PCI_PCU_3") Signed-off-by: Xiongfeng Wang wangxiongfeng2@huawei.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Reviewed-by: Kan Liang kan.liang@linux.intel.com Link: https://lore.kernel.org/r/20221118063137.121512-3-wangxiongfeng2@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/events/intel/uncore_snbep.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 0f61f46e6086..fe2edc760e60 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -2762,6 +2762,7 @@ static bool hswep_has_limit_sbox(unsigned int device) return false;
pci_read_config_dword(dev, HSWEP_PCU_CAPID4_OFFET, &capid4); + pci_dev_put(dev); if (!hswep_get_chop(capid4)) return true;