diff options
Diffstat (limited to 'drivers/pci/controller/vmd.c')
| -rw-r--r-- | drivers/pci/controller/vmd.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index f375c21ceeb1..1361a79bd1e7 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/msi.h> #include <linux/pci.h> +#include <linux/pci-ecam.h> #include <linux/srcu.h> #include <linux/rculist.h> #include <linux/rcupdate.h> @@ -328,15 +329,13 @@ static void vmd_remove_irq_domain(struct vmd_dev *vmd) static char __iomem *vmd_cfg_addr(struct vmd_dev *vmd, struct pci_bus *bus, unsigned int devfn, int reg, int len) { - char __iomem *addr = vmd->cfgbar + - ((bus->number - vmd->busn_start) << 20) + - (devfn << 12) + reg; + unsigned int busnr_ecam = bus->number - vmd->busn_start; + u32 offset = PCIE_ECAM_OFFSET(busnr_ecam, devfn, reg); - if ((addr - vmd->cfgbar) + len >= - resource_size(&vmd->dev->resource[VMD_CFGBAR])) + if (offset + len >= resource_size(&vmd->dev->resource[VMD_CFGBAR])) return NULL; - return addr; + return vmd->cfgbar + offset; } /* |