1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c
index 2622577521a1..028af5dbeed6 100644
--- a/drivers/ata/pata_pdc2027x.c
+++ b/drivers/ata/pata_pdc2027x.c
@@ -348,7 +348,7 @@ static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long
         ata_id_c_string(pair->id, model_num, ATA_ID_PROD,
                           ATA_ID_PROD_LEN + 1);
         /* If the master is a maxtor in UDMA6 then the slave should not use UDMA 6 */
-        if (strstr(model_num, "Maxtor") == 0 && pair->dma_mode == XFER_UDMA_6)
+        if (strstr(model_num, "Maxtor") == NULL && pair->dma_mode == XFER_UDMA_6)
                 mask &= ~ (1 << (6 + ATA_SHIFT_UDMA));
 
         return ata_pci_default_filter(adev, mask);