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From: Jerome Glisse <jglisse@redhat.com>
To: airlied@gmail.com
Cc: Jerome Glisse <jglisse@redhat.com>, dri-devel@lists.sf.net
Subject: [PATCH] drm/radeon/kms: avoid possible oops (call gart_fini before gart_disable)
Date: Wed, 17 Mar 2010 15:44:29 +0100	[thread overview]
Message-ID: <1268837069-9740-1-git-send-email-jglisse@redhat.com> (raw)

radeon_gart_fini might call GART unbind callback function which
might try to access GART table but if gart_disable is call first
the GART table will be unmapped so any access to it will oops.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
---
 drivers/gpu/drm/radeon/r100.c  |    2 +-
 drivers/gpu/drm/radeon/r300.c  |    2 +-
 drivers/gpu/drm/radeon/r600.c  |    2 +-
 drivers/gpu/drm/radeon/rs400.c |    2 +-
 drivers/gpu/drm/radeon/rs600.c |    2 +-
 drivers/gpu/drm/radeon/rv770.c |    2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 9fef5cc..7a1180d 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -236,9 +236,9 @@ int r100_pci_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 
 void r100_pci_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	r100_pci_gart_disable(rdev);
 	radeon_gart_table_ram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 int r100_irq_set(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 6a0b550..756bd4d 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -170,9 +170,9 @@ void rv370_pcie_gart_disable(struct radeon_device *rdev)
 
 void rv370_pcie_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	rv370_pcie_gart_disable(rdev);
 	radeon_gart_table_vram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 void r300_fence_ring_emit(struct radeon_device *rdev,
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 3df2ab1..a948947 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -492,9 +492,9 @@ void r600_pcie_gart_disable(struct radeon_device *rdev)
 
 void r600_pcie_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	r600_pcie_gart_disable(rdev);
 	radeon_gart_table_vram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 void r600_agp_enable(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index a9e06b0..e8065bd 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -203,9 +203,9 @@ void rs400_gart_disable(struct radeon_device *rdev)
 
 void rs400_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	rs400_gart_disable(rdev);
 	radeon_gart_table_ram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 5c73c0f..7d8ae42 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -340,9 +340,9 @@ void rs600_gart_disable(struct radeon_device *rdev)
 
 void rs600_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	rs600_gart_disable(rdev);
 	radeon_gart_table_vram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 #define R600_PTE_VALID     (1 << 0)
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 3f477e7..2b8a4e1 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -126,9 +126,9 @@ void rv770_pcie_gart_disable(struct radeon_device *rdev)
 
 void rv770_pcie_gart_fini(struct radeon_device *rdev)
 {
+	radeon_gart_fini(rdev);
 	rv770_pcie_gart_disable(rdev);
 	radeon_gart_table_vram_free(rdev);
-	radeon_gart_fini(rdev);
 }
 
 
-- 
1.6.6.1


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                 reply	other threads:[~2010-03-17 14:44 UTC|newest]

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