From: Steve Wahl steve.wahl@hpe.com
commit bbb320bfe2c3e9740fe89cfa0a7089b4e8bfc4ff upstream.
Stop restricting the PCI search to a range of PCI domains fed to pci_get_domain_bus_and_slot(). Instead, use for_each_pci_dev() and look at all PCI domains in one pass.
On systems with more than 8 sockets, this avoids error messages like "Information: Invalid level, Can't get TDP control information at specified levels on cpu 480" from the intel speed select utility.
Fixes: aa2ddd242572 ("platform/x86: ISST: Use numa node id for cpu pci dev mapping") Signed-off-by: Steve Wahl steve.wahl@hpe.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20230519160420.2588475-1-steve.wahl@hpe.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/platform/x86/intel/speed_select_if/isst_if_common.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-)
--- a/drivers/platform/x86/intel/speed_select_if/isst_if_common.c +++ b/drivers/platform/x86/intel/speed_select_if/isst_if_common.c @@ -294,14 +294,13 @@ struct isst_if_pkg_info { static struct isst_if_cpu_info *isst_cpu_info; static struct isst_if_pkg_info *isst_pkg_info;
-#define ISST_MAX_PCI_DOMAINS 8 - static struct pci_dev *_isst_if_get_pci_dev(int cpu, int bus_no, int dev, int fn) { struct pci_dev *matched_pci_dev = NULL; struct pci_dev *pci_dev = NULL; + struct pci_dev *_pci_dev = NULL; int no_matches = 0, pkg_id; - int i, bus_number; + int bus_number;
if (bus_no < 0 || bus_no >= ISST_MAX_BUS_NUMBER || cpu < 0 || cpu >= nr_cpu_ids || cpu >= num_possible_cpus()) @@ -313,12 +312,11 @@ static struct pci_dev *_isst_if_get_pci_ if (bus_number < 0) return NULL;
- for (i = 0; i < ISST_MAX_PCI_DOMAINS; ++i) { - struct pci_dev *_pci_dev; + for_each_pci_dev(_pci_dev) { int node;
- _pci_dev = pci_get_domain_bus_and_slot(i, bus_number, PCI_DEVFN(dev, fn)); - if (!_pci_dev) + if (_pci_dev->bus->number != bus_number || + _pci_dev->devfn != PCI_DEVFN(dev, fn)) continue;
++no_matches;