| Message ID | 20231003125300.5541-2-ilpo.jarvinen@linux.intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: PCI_HEADER_TYPE bugfix & cleanups | expand |
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index e718a816d481..d5b97a6aae56 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -525,8 +525,7 @@ static void vmd_domain_reset(struct vmd_dev *vmd) base = vmd->cfgbar + PCIE_ECAM_OFFSET(bus, PCI_DEVFN(dev, 0), 0); - hdr_type = readb(base + PCI_HEADER_TYPE) & - PCI_HEADER_TYPE_MASK; + hdr_type = readb(base + PCI_HEADER_TYPE); functions = (hdr_type & 0x80) ? 8 : 1; for (fn = 0; fn < functions; fn++) {
vmd_domain_reset() attempts to find whether the device may contain multiple functions by checking 0x80 (Multi-Function Device), however, the hdr_type variable has already been masked with PCI_HEADER_TYPE_MASK so the check can never true. To fix the issue, don't mask the read with PCI_HEADER_TYPE_MASK. Fixes: 6aab5622296b ("PCI: vmd: Clean up domain before enumeration") Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Cc: Nirmal Patel <nirmal.patel@linux.intel.com> --- drivers/pci/controller/vmd.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)