[PATCH v3 29/32] PCI/radeon: use PCIe capabilities access functions to simplify implementation

[Jiang Liu]

From: Jiang Liu <jiang.liu@xxxxxxxxxx>

Use PCIe capabilities access functions to simplify radeon driver's
implementation.

Signed-off-by: Jiang Liu <liuj97@xxxxxxxxx>
---
 drivers/gpu/drm/radeon/evergreen.c |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 01550d0..8804c80 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -77,13 +77,9 @@ void evergreen_tiling_fields(unsigned tiling_flags, unsigned *bankw,
 void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev)
 {
 	u16 ctl, v;
-	int cap, err;
+	int err;
 
-	cap = pci_pcie_cap(rdev->pdev);
-	if (!cap)
-		return;
-
-	err = pci_read_config_word(rdev->pdev, cap + PCI_EXP_DEVCTL, &ctl);
+	err = pci_pcie_capability_read_word(rdev->pdev, PCI_EXP_DEVCTL, &ctl);
 	if (err)
 		return;
 
@@ -95,7 +91,7 @@ void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev)
 	if ((v == 0) || (v == 6) || (v == 7)) {
 		ctl &= ~PCI_EXP_DEVCTL_READRQ;
 		ctl |= (2 << 12);
-		pci_write_config_word(rdev->pdev, cap + PCI_EXP_DEVCTL, ctl);
+		pci_pcie_capability_write_word(rdev->pdev, PCI_EXP_DEVCTL, ctl);
 	}
 }
 
-- 
1.7.9.5

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