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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-04 16:51:53 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-04 16:51:53 +1100 |
| commit | f19637e74309df700e9f731cffdc2427ab2d2c23 (patch) | |
| tree | ba827d28a9b1630390b5ee09d311bfb4cca885ab /drivers/gpu/drm/radeon/radeon_ring.c | |
| parent | 8b31849a113a8868eb2de692be5c9ecadae93ac9 (diff) | |
| parent | 089c71a7c306dff067097f37ef329ccdf3269811 (diff) | |
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull radeon fixes from Dave Airlie:
"I got these late last week, the main chunks of these fix a rendering
regression since 3.7, and the settle ones all fix the issue where we
don't wait long enough for the memory controller to settle after
turning it off which causes bad memory reads, they all fix real users
bugs, and most of them are destined for stable.
Can't remember if you had net connection on that island :-)"
I don't know if the "two tin-cans and a string" thing here on "that
island" can really be considered internet, but I guess I can pull
things. Barely.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: switch back to the CP ring for VM PT updates
drm/radeon: prevent crash in the ring space allocation
drm/radeon: Calling object_unrefer() when creating fb failure
drm/radeon/r5xx-r7xx: wait for the MC to settle after MC blackout
drm/radeon/evergreen+: wait for the MC to settle after MC blackout
drm/radeon: protect against div by 0 in backend setup
drm/radeon: fix backend map setup on 1 RB sumo boards
drm/radeon: add quirk for RV100 board
drm/radeon: add WAIT_UNTIL to the non-VM safe regs list for cayman/TN
drm/radeon: fix MC blackout on evergreen+
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_ring.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index 2430d80b187..cd72062d5a9 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -377,6 +377,9 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi { int r; + /* make sure we aren't trying to allocate more space than there is on the ring */ + if (ndw > (ring->ring_size / 4)) + return -ENOMEM; /* Align requested size with padding so unlock_commit can * pad safely */ ndw = (ndw + ring->align_mask) & ~ring->align_mask; |