remoteproc: don't use virtio's weak barriers

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When creating a virtqueue for rpmsg, tell virtio we're not interested
in "weak" smp barriers, since we're talking to a real device.

On ARM, this means using a DSB instead of a DMB, which is needed
for platforms that kick the remote processor using some kind of
a mailbox device mapped to Device memory (otherwise the kick can
jump ahead and wake the remote processor before it has observed
the changes to the vrings).

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>

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Ohad Ben-Cohen 2012-01-12 09:26:57 +02:00

parent b719587eb4

commit dd6da1c5e9

1 changed files with 5 additions and 1 deletions

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drivers/remoteproc/remoteproc_rpmsg.c

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