fsldma: snooping is not enabled for last entry in descriptor chain

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On the 83xx controller, snooping is necessary for the DMA controller to
ensure cache coherence with the CPU when transferring to/from RAM.

The last descriptor in a chain will always have the End-of-Chain interrupt
bit set, so we can set the snoop bit while adding the End-of-Chain
interrupt bit.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Li Yang <leoli@freescale.com>

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Ira Snyder 2009-05-15 11:33:20 -07:00 • committed by Li Yang

parent bcfb7465c0

commit 776c8943f2

1 changed files with 7 additions and 2 deletions

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drivers/dma/fsldma.c

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