diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index ae4c857fb173..8ff7cac222dc 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -4141,8 +4141,15 @@ uint32_t r100_mm_rreg(struct radeon_device *rdev, uint32_t reg, if (reg < rdev->rmmio_size && !always_indirect) return readl(((void __iomem *)rdev->rmmio) + reg); else { + unsigned long flags; + uint32_t ret; + + spin_lock_irqsave(&rdev->mmio_idx_lock, flags); writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX); - return readl(((void __iomem *)rdev->rmmio) + RADEON_MM_DATA); + ret = readl(((void __iomem *)rdev->rmmio) + RADEON_MM_DATA); + spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags); + + return ret; } } @@ -4152,8 +4159,12 @@ void r100_mm_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v, if (reg < rdev->rmmio_size && !always_indirect) writel(v, ((void __iomem *)rdev->rmmio) + reg); else { + unsigned long flags; + + spin_lock_irqsave(&rdev->mmio_idx_lock, flags); writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX); writel(v, ((void __iomem *)rdev->rmmio) + RADEON_MM_DATA); + spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags); } } |