[PATCH] drm: change pci_read_config_dword calls to pcie_capability_read_dwordones

[Lucas Kannebley Tavares]

Replacing these calls avoids compatibility problems with PCIe v1/v2
Capability structures.

Signed-off-by: Lucas Kannebley Tavares <lucaskt@xxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/drm_pci.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index ea41234..b824d4c 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -486,17 +486,13 @@ int drm_pcie_get_speed_cap_mask(struct drm_device 
*dev, u32 *mask)
 	if (root == NULL)
 		root = dev->pdev;

-	pos = pci_pcie_cap(root);
-	if (!pos)
-		return -EINVAL;
-
 	/* we've been informed via and serverworks don't make the cut */
 	if (root->vendor == PCI_VENDOR_ID_VIA ||
 	    root->vendor == PCI_VENDOR_ID_SERVERWORKS)
 		return -EINVAL;

-	pci_read_config_dword(root, pos + PCI_EXP_LNKCAP, &lnkcap);
-	pci_read_config_dword(root, pos + PCI_EXP_LNKCAP2, &lnkcap2);
+	pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
+	pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap2);

 	lnkcap &= PCI_EXP_LNKCAP_SLS;
 	lnkcap2 &= 0xfe;
--

Lucas Kannebley Tavares
Software Engineer
IBM Linux Technology Center

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