x86/oprofile: fix pci_dev use count for AMD northbridge devices

This patch fixes the PCI device use count for AMD northbridge
devices. In case of an IBS LVT initialization failure, the PCI device
is released now by calling pci_dev_put().

If there are no initialization errors, the devices are released in
pci_get_device() while iterating.

Signed-off-by: Robert Richter <robert.richter@amd.com>

diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 98658f25f542b0be2a62116f1dcd61cb6d4e09a7..c5b5c7fb3ceda286cd5f24764e6307f344f16fc6 100644 (file)
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -409,6 +409,7 @@ static int init_ibs_nmi(void)
                                       | IBSCTL_LVTOFFSETVAL);
                pci_read_config_dword(cpu_cfg, IBSCTL, &value);
                if (value != (ibs_eilvt_off | IBSCTL_LVTOFFSETVAL)) {
+                       pci_dev_put(cpu_cfg);
                        printk(KERN_DEBUG "Failed to setup IBS LVT offset, "
                                "IBSCTL = 0x%08x", value);
                        return 1;