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| author | Johannes Berg <johannes.berg@intel.com> | 2013-10-11 09:57:47 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-10-11 09:57:47 +0200 |
| commit | 04a4e1fdd248d7a19d53e6e90f757e99093e3d29 (patch) | |
| tree | ae16ad3f90d9dd726838077aae74675ba7ae51fc /drivers/gpu/drm/radeon/rs400.c | |
| parent | 19e737c98479f040e23987e50596a861e5e88b92 (diff) | |
| parent | e25aa82a89db9e3b09d02b5481aa375c7712a10d (diff) | |
Merge remote-tracking branch 'wireless-next/master' into HEAD
Diffstat (limited to 'drivers/gpu/drm/radeon/rs400.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rs400.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c index b8074a8ec75a..9566b5940a5a 100644 --- a/drivers/gpu/drm/radeon/rs400.c +++ b/drivers/gpu/drm/radeon/rs400.c @@ -274,19 +274,26 @@ static void rs400_mc_init(struct radeon_device *rdev) uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg) { + unsigned long flags; uint32_t r; + spin_lock_irqsave(&rdev->mc_idx_lock, flags); WREG32(RS480_NB_MC_INDEX, reg & 0xff); r = RREG32(RS480_NB_MC_DATA); WREG32(RS480_NB_MC_INDEX, 0xff); + spin_unlock_irqrestore(&rdev->mc_idx_lock, flags); return r; } void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v) { + unsigned long flags; + + spin_lock_irqsave(&rdev->mc_idx_lock, flags); WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN); WREG32(RS480_NB_MC_DATA, (v)); WREG32(RS480_NB_MC_INDEX, 0xff); + spin_unlock_irqrestore(&rdev->mc_idx_lock, flags); } #if defined(CONFIG_DEBUG_FS) |