| commit | ffd9a1ba9fdb7f2bd1d1ad9b9243d34e96756ba2 | [log] [tgz] |
|---|---|---|
| author | Russell King <rmk+kernel@armlinux.org.uk> | Thu May 02 17:19:18 2019 +0100 |
| committer | Russell King <rmk+kernel@armlinux.org.uk> | Thu May 09 17:16:41 2019 +0100 |
| tree | db8149561633850c44ce0fc8d8793fd99a3f7fc0 | |
| parent | e89e261365588035edd7c8b42a961c1e6c36a567 [diff] |
ARM: riscpc: fix DMA
DMA got broken a while back in two different ways:
1) a change in the behaviour of disable_irq() to wait for the interrupt
to finish executing causes us to deadlock at the end of DMA.
2) a change to avoid modifying the scatterlist left the first transfer
uninitialised.
DMA is only used with expansion cards, so has gone unnoticed.
Fixes: fa4e99899932 ("[ARM] dma: RiscPC: don't modify DMA SG entries")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>