drm/i915/gvt: get msi cap offset from pdev directly

Linux PCI driver saves the msi and msix capability offset
in pci_dev->msi_cap and pci_dev->msix_cap. We can use msi_cap
in pci_dev directly, no need hardcode.

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c
index 31b59d4..bf03777 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gvt.c
+++ b/drivers/gpu/drm/i915/gvt/gvt.c
@@ -103,19 +103,20 @@ int intel_gvt_init_host(void)
 static void init_device_info(struct intel_gvt *gvt)
 {
        struct intel_gvt_device_info *info = &gvt->device_info;
+       struct pci_dev *pdev = gvt->dev_priv->drm.pdev;
 
        if (IS_BROADWELL(gvt->dev_priv) || IS_SKYLAKE(gvt->dev_priv)) {
                info->max_support_vgpus = 8;
                info->cfg_space_size = 256;
                info->mmio_size = 2 * 1024 * 1024;
                info->mmio_bar = 0;
-               info->msi_cap_offset = IS_SKYLAKE(gvt->dev_priv) ? 0xac : 0x90;
                info->gtt_start_offset = 8 * 1024 * 1024;
                info->gtt_entry_size = 8;
                info->gtt_entry_size_shift = 3;
                info->gmadr_bytes_in_cmd = 8;
                info->max_surface_size = 36 * 1024 * 1024;
        }
+       info->msi_cap_offset = pdev->msi_cap;
 }
 
 static int gvt_service_thread(void *data)