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platform/x86: ISST: Remove 8 socket limit

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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: aa2ddd2425 ("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>
This commit is contained in:
Steve Wahl 2023-05-19 11:04:20 -05:00 committed by Greg Kroah-Hartman
parent f34428b5a3
commit 5522469095
1 changed files with 5 additions and 7 deletions
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12
drivers/platform/x86/intel/speed_select_if/isst_if_common.c
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@ -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_dev(int cpu, int bus_no, int dev, int fn
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;