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| author | Alex Ivanov <gnidorah@p0n4ik.tk> | 2013-09-20 15:36:06 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-09-20 23:34:52 +0200 |
| commit | 0eb3448aa6b31fbf24c31756aba7940cac5ad6b8 (patch) | |
| tree | 0ca178740172d26985af7ddf8325e85a544835be /drivers/gpu/drm/radeon/r600_dpm.c | |
| parent | drm/radeon/cik: Add tiling mode index for 1D tiled depth/stencil surfaces (diff) | |
| download | linux-0eb3448aa6b31fbf24c31756aba7940cac5ad6b8.tar.xz linux-0eb3448aa6b31fbf24c31756aba7940cac5ad6b8.zip | |
drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2)
Prevent NULL pointer dereference in case when radeon_ring_fini() did it's job.
Reading of r100_cp_ring_info and radeon_ring_gfx debugfs entries will lead to a KP if ring buffer was deallocated, e.g. on failed ring test.
Seen on PA-RISC machine having "radeon: ring test failed (scratch(0x8504)=0xCAFEDEAD)" issue.
v2: agd5f: add some parens around ring->ready check
Signed-off-by: Alex Ivanov <gnidorah@p0n4ik.tk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_dpm.c')
0 files changed, 0 insertions, 0 deletions