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Staging: hv: vmbus: Fix the memory barrier in hv_ringbuffer_read()

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Use the correct barrier interface.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan 2011-06-06 15:49:51 -07:00 committed by Greg Kroah-Hartman
parent ac4accb2bd
commit ef0d5b2302
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/hv/ring_buffer.c
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@ -513,7 +513,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,
/* Make sure all reads are done before we update the read index since */
/* the writer may start writing to the read area once the read index */
/*is updated */
mb();
smp_mb();
/* Update the read index */
hv_set_next_read_location(inring_info, next_read_location);