iop-adma: add a dummy read to flush next descriptor update

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The current dummy read references the wrong address allowing the next
descriptor address update to linger in the store buffer and get passed
by an 'append' event.

This issue was uncovered by the change from strongly-ordered to device
memory for the adma registers.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Dan Williams 2008-11-11 13:12:33 -07:00

parent f21f237cf5

commit 137cb55c6d

1 changed files with 5 additions and 4 deletions

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drivers/dma/iop-adma.c

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