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(parent: 0686ab7) | patch
drivers: hv: check interrupt mask before read_index
authorJason Wang <jasowang@redhat.com>
Thu, 20 Jun 2013 04:58:57 +0000 (12:58 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 24 Jun 2013 23:24:17 +0000 (16:24 -0700)
commite91e84fa4cfeb67a9a096f1adaa1a1a692474724
tree7e36ab11890da81a89817e2b24e85cc11b480b83tree | snapshot
parent0686ab7a7d05cda3373e311a49b2478bd4f03c5dcommit | diff
drivers: hv: check interrupt mask before read_index

This patches add a read barriers to force the driver to check the interrupt mask
before read_index. Otherwise we may lost a kick to host.

Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hv/ring_buffer.c diff | blob | history
John Crispins staging tree