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| author | Sam Bobroff <sbobroff@linux.ibm.com> | 2019-11-18 10:53:53 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-29 10:21:50 +0100 |
| commit | 6394d187511303b91e5e3b1c562117bf427a71ef (patch) | |
| tree | 1720436a17ebab8a804c83d1a6b7a08b57b684d2 /scripts/objdiff | |
| parent | fe1787af161f91dffcef3a0248b85f0cefdea64b (diff) | |
drm/radeon: fix bad DMA from INTERRUPT_CNTL2
[ Upstream commit 62d91dd2851e8ae2ca552f1b090a3575a4edf759 ]
The INTERRUPT_CNTL2 register expects a valid DMA address, but is
currently set with a GPU MC address. This can cause problems on
systems that detect the resulting DMA read from an invalid address
(found on a Power8 guest).
Instead, use the DMA address of the dummy page because it will always
be safe.
Fixes: d8f60cfc9345 ("drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3)")
Fixes: 25a857fbe973 ("drm/radeon/kms: add support for interrupts on SI")
Fixes: a59781bbe528 ("drm/radeon: add support for interrupts on CIK (v5)")
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions