1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index 1f80c6d58805..47bcd91c9b5f 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -179,7 +179,7 @@ dma_pio:
                                    ((dma_stat&(1<<(5+unit)))==(1<<(5+unit)))) {
                                 u8 dmaspeed = dma_timing;
 
-                                dma_timing &= ~0xFF;
+                                dma_timing &= ~0xFFU;
                                 if ((dmaspeed & 0x20) == 0x20)
                                         dmaspeed = XFER_MW_DMA_2;
                                 else if ((dmaspeed & 0x21) == 0x21)
@@ -193,7 +193,7 @@ dma_pio:
                         } else if (pio_timing) {
                                 u8 piospeed = pio_timing;
 
-                                pio_timing &= ~0xFF;
+                                pio_timing &= ~0xFFU;
                                 if ((piospeed & 0x20) == 0x20)
                                         piospeed = XFER_PIO_4;
                                 else if ((piospeed & 0x22) == 0x22)
@@ -214,8 +214,8 @@ dma_pio:
 
 oem_setup_failed:
 
-        pio_timing      &= ~0xFF;
-        dma_timing      &= ~0xFF;
+        pio_timing      &= ~0xFFU;
+        dma_timing      &= ~0xFFU;
         ultra_timing    &= ~(0x0F << (4*unit));
         ultra_enable    &= ~(0x01 << drive->dn);
         csb5_pio        &= ~(0x0F << (4*drive->dn));