mptsas: fix wrong formula

MPI_DOORBELL_WHO_INIT_SHIFT is being repeated twice.  Reported
by Coverity.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c
index 1ce3226..499c146 100644 (file)
--- a/hw/scsi/mptsas.c
+++ b/hw/scsi/mptsas.c
@@ -824,7 +824,7 @@ static uint32_t mptsas_doorbell_read(MPTSASState *s)
 {
     uint32_t ret;
 
-    ret = (s->who_init << MPI_DOORBELL_WHO_INIT_SHIFT) & MPI_DOORBELL_WHO_INIT_SHIFT;
+    ret = (s->who_init << MPI_DOORBELL_WHO_INIT_SHIFT) & MPI_DOORBELL_WHO_INIT_MASK;
     ret |= s->state;
     switch (s->doorbell_state) {
     case DOORBELL_NONE: