diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r420.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r420.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c index 4e796ecf9ea4..6edf2b3a52b4 100644 --- a/drivers/gpu/drm/radeon/r420.c +++ b/drivers/gpu/drm/radeon/r420.c @@ -160,18 +160,25 @@ void r420_pipes_init(struct radeon_device *rdev) u32 r420_mc_rreg(struct radeon_device *rdev, u32 reg) { + unsigned long flags; u32 r; + spin_lock_irqsave(&rdev->mc_idx_lock, flags); WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg)); r = RREG32(R_0001FC_MC_IND_DATA); + spin_unlock_irqrestore(&rdev->mc_idx_lock, flags); return r; } void r420_mc_wreg(struct radeon_device *rdev, u32 reg, u32 v) { + unsigned long flags; + + spin_lock_irqsave(&rdev->mc_idx_lock, flags); WREG32(R_0001F8_MC_IND_INDEX, S_0001F8_MC_IND_ADDR(reg) | S_0001F8_MC_IND_WR_EN(1)); WREG32(R_0001FC_MC_IND_DATA, v); + spin_unlock_irqrestore(&rdev->mc_idx_lock, flags); } static void r420_debugfs(struct radeon_device *rdev) |