[SCSI] st: fix gcc 4.4 warning

This patch fixes the GCC 4.4 warning reported by David Binderman and Sergey
Senozhatsky. The old version was working correctly but was not easy to read.

Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index eb24efea8f14..6f46e627aab3 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -2964,7 +2964,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
                             !(STp->use_pf & PF_TESTED)) {
                                 /* Try the other possible state of Page Format if not
                                    already tried */
-                                STp->use_pf = !STp->use_pf | PF_TESTED;
+                                STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED;
                                 st_release_request(SRpnt);
                                 SRpnt = NULL;
                                 return st_int_ioctl(STp, cmd_in, arg);