Merge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

two more radeon fixes.

* 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix irq ring buffer overflow handling
  drm/radeon: fix error handling in radeon_vm_bo_set_addr

5 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 0b2471107137..cc1f02f6817d 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -7376,6 +7376,7 @@ static inline u32 cik_get_ih_wptr(struct radeon_device *rdev)
                 tmp = RREG32(IH_RB_CNTL);
                 tmp |= IH_WPTR_OVERFLOW_CLEAR;
                 WREG32(IH_RB_CNTL, tmp);
+                wptr &= ~RB_OVERFLOW;
         }
         return (wptr & rdev->ih.ptr_mask);
 }
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 250bac3935a4..15e4f28015e1 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -4756,6 +4756,7 @@ static u32 evergreen_get_ih_wptr(struct radeon_device *rdev)
                 tmp = RREG32(IH_RB_CNTL);
                 tmp |= IH_WPTR_OVERFLOW_CLEAR;
                 WREG32(IH_RB_CNTL, tmp);
+                wptr &= ~RB_OVERFLOW;
         }
         return (wptr & rdev->ih.ptr_mask);
 }
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index c66952d4b00c..3c69f58e46ef 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3795,6 +3795,7 @@ static u32 r600_get_ih_wptr(struct radeon_device *rdev)
                 tmp = RREG32(IH_RB_CNTL);
                 tmp |= IH_WPTR_OVERFLOW_CLEAR;
                 WREG32(IH_RB_CNTL, tmp);
+                wptr &= ~RB_OVERFLOW;
         }
         return (wptr & rdev->ih.ptr_mask);
 }
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index fa41e0d7d17d..725d3669014f 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -472,6 +472,10 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
         if (bo_va->soffset) {
                 /* add a clone of the bo_va to clear the old address */
                 tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
+                if (!tmp) {
+                        mutex_unlock(&vm->mutex);
+                        return -ENOMEM;
+                }
                 tmp->soffset = bo_va->soffset;
                 tmp->eoffset = bo_va->eoffset;
                 tmp->vm = vm;
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index eba0225259a4..9e854fd016da 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -6103,6 +6103,7 @@ static inline u32 si_get_ih_wptr(struct radeon_device *rdev)
                 tmp = RREG32(IH_RB_CNTL);
                 tmp |= IH_WPTR_OVERFLOW_CLEAR;
                 WREG32(IH_RB_CNTL, tmp);
+                wptr &= ~RB_OVERFLOW;
         }
         return (wptr & rdev->ih.ptr_mask);
 }