radeon: Call pci_clear_master() instead of open-coding it.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 3 insertions, 14 deletions

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 3ec81c3d5108..bfd36ab643a6 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -2186,7 +2186,6 @@ bool r100_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
 void r100_bm_disable(struct radeon_device *rdev)
 {
         u32 tmp;
-        u16 tmp16;
 
         /* disable bus mastering */
         tmp = RREG32(R_000030_BUS_CNTL);
@@ -2197,8 +2196,7 @@ void r100_bm_disable(struct radeon_device *rdev)
         WREG32(R_000030_BUS_CNTL, (tmp & 0xFFFFFFFF) | 0x00000040);
         tmp = RREG32(RADEON_BUS_CNTL);
         mdelay(1);
-        pci_read_config_word(rdev->pdev, 0x4, &tmp16);
-        pci_write_config_word(rdev->pdev, 0x4, tmp16 & 0xFFFB);
+        pci_clear_master(rdev->pdev);
         mdelay(1);
 }
 
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 803e0d3c1773..ec46eb45e34c 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -322,16 +322,6 @@ void rs600_hpd_fini(struct radeon_device *rdev)
         }
 }
 
-void rs600_bm_disable(struct radeon_device *rdev)
-{
-        u16 tmp;
-
-        /* disable bus mastering */
-        pci_read_config_word(rdev->pdev, 0x4, &tmp);
-        pci_write_config_word(rdev->pdev, 0x4, tmp & 0xFFFB);
-        mdelay(1);
-}
-
 int rs600_asic_reset(struct radeon_device *rdev)
 {
         struct rv515_mc_save save;
@@ -355,7 +345,8 @@ int rs600_asic_reset(struct radeon_device *rdev)
         WREG32(RADEON_CP_RB_CNTL, tmp);
         pci_save_state(rdev->pdev);
         /* disable bus mastering */
-        rs600_bm_disable(rdev);
+        pci_clear_master(rdev->pdev);
+        mdelay(1);
         /* reset GA+VAP */
         WREG32(R_0000F0_RBBM_SOFT_RESET, S_0000F0_SOFT_RESET_VAP(1) |
                                         S_0000F0_SOFT_RESET_GA(1));