diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 6e41ccb..a66ebd1 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -218,7 +218,7 @@
 	return err;
 }
 
-static struct ide_port_info tc86c001_chipset __devinitdata = {
+static const struct ide_port_info tc86c001_chipset __devinitdata = {
 	.name		= "TC86C001",
 	.init_chipset	= init_chipset_tc86c001,
 	.init_hwif	= init_hwif_tc86c001,