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-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 0b3c01ac4259..64c8b88a429f 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -2539,6 +2539,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
2539static void ahc_linux_get_signalling(struct Scsi_Host *shost) 2539static void ahc_linux_get_signalling(struct Scsi_Host *shost)
2540{ 2540{
2541 struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata; 2541 struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
2542 unsigned long flags;
2542 u8 mode; 2543 u8 mode;
2543 2544
2544 if (!(ahc->features & AHC_ULTRA2)) { 2545 if (!(ahc->features & AHC_ULTRA2)) {
@@ -2550,7 +2551,11 @@ static void ahc_linux_get_signalling(struct Scsi_Host *shost)
2550 return; 2551 return;
2551 } 2552 }
2552 2553
2554 ahc_lock(ahc, &flags);
2555 ahc_pause(ahc);
2553 mode = ahc_inb(ahc, SBLKCTL); 2556 mode = ahc_inb(ahc, SBLKCTL);
2557 ahc_unpause(ahc);
2558 ahc_unlock(ahc, &flags);
2554 2559
2555 if (mode & ENAB40) 2560 if (mode & ENAB40)
2556 spi_signalling(shost) = SPI_SIGNAL_LVD; 2561 spi_signalling(shost) = SPI_SIGNAL_LVD;