ibmvscsi: Add memory barriers for send / receive

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commit 7114aae027 upstream.

Add a memory barrier prior to sending a new command to the VIOS
to ensure the VIOS does not receive stale data in the command buffer.
Also add a memory barrier when processing the CRQ for completed commands.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Brian King 2014-05-23 10:52:11 -05:00 • committed by Greg Kroah-Hartman

parent 3d83a52d2e

commit 647431548f

1 changed files with 10 additions and 0 deletions

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drivers/scsi/ibmvscsi/ibmvscsi.c

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