diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c
index 28713274e0ccfed086667422a5fcfe4dd924ae9f..3c5f1808a4ca9581e37033ebcd8a17dcde8da112 100644
--- a/arch/mips/txx9/generic/pci.c
+++ b/arch/mips/txx9/generic/pci.c
@@ -331,7 +331,7 @@ static void quirk_slc90e66_ide(struct pci_dev *dev)
 	 * !!! DO NOT REMOVE THIS COMMENT IT IS REQUIRED BY SMSC !!!
 	 */
 	dat |= 0x01;
-	pci_write_config_byte(dev, regs[i], dat);
+	pci_write_config_byte(dev, 0x5c, dat);
 	pci_read_config_byte(dev, 0x5c, &dat);
 	printk(KERN_CONT " REG5C %02x", dat);
 	printk(KERN_CONT "\n");