1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/input/mouse/pc110pad.c b/drivers/input/mouse/pc110pad.c
index 8991ab0b4fe3..61cff8374e6c 100644
--- a/drivers/input/mouse/pc110pad.c
+++ b/drivers/input/mouse/pc110pad.c
@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -62,8 +63,10 @@ static irqreturn_t pc110pad_interrupt(int irq, void *ptr)
         int value     = inb_p(pc110pad_io);
         int handshake = inb_p(pc110pad_io + 2);
 
-        outb_p(handshake |  1, pc110pad_io + 2);
-        outb_p(handshake & ~1, pc110pad_io + 2);
+        outb(handshake |  1, pc110pad_io + 2);
+        udelay(2);
+        outb(handshake & ~1, pc110pad_io + 2);
+        udelay(2);
         inb_p(0x64);
 
         pc110pad_data[pc110pad_count++] = value;