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| author | Jernej Skrabec <jernej.skrabec@gmail.com> | 2022-10-25 18:54:11 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-11-03 15:45:42 +0100 |
| commit | 9ad0c1252e84dbc664f0462707182245ed603237 (patch) | |
| tree | 6e442b810c04c8f1e1e7c57ddefecb8c2f42875e /LICENSES | |
| parent | Linux 6.1-rc3 (diff) | |
| download | linux-9ad0c1252e84dbc664f0462707182245ed603237.tar.xz linux-9ad0c1252e84dbc664f0462707182245ed603237.zip | |
iommu/sun50i: Fix reset release
Reset signal is asserted by writing 0 to the corresponding locations of
masters we want to reset. So in order to deassert all reset signals, we
should write 1's to all locations.
Current code writes 1's to locations of masters which were just reset
which is good. However, at the same time it also writes 0's to other
locations and thus asserts reset signals of remaining masters. Fix code
by writing all 1's when we want to deassert all reset signals.
This bug was discovered when working with Cedrus (video decoder). When
it faulted, display went blank due to reset signal assertion.
Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver")
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20221025165415.307591-2-jernej.skrabec@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'LICENSES')
0 files changed, 0 insertions, 0 deletions