[SCSI] hpsa: fix bad comparison

'!' has higher precedence than '&'.  CFGTBL_ChangeReq is 0x1 so the
original code is equivelent to if (!doorbell_value) {...

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index eb6938fe77b0..c30591f84a06 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3614,7 +3614,7 @@ static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
                 spin_lock_irqsave(&h->lock, flags);
                 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
                 spin_unlock_irqrestore(&h->lock, flags);
-                if (!doorbell_value & CFGTBL_ChangeReq)
+                if (!(doorbell_value & CFGTBL_ChangeReq))
                         break;
                 /* delay and try again */
                 usleep_range(10000, 20000);