diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index bebe18a..d2c8b55 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -372,7 +372,7 @@
 	hwif->ide_dma_end   = &sc1200_ide_dma_end;
 }
 
-static struct ide_port_info sc1200_chipset __devinitdata = {
+static const struct ide_port_info sc1200_chipset __devinitdata = {
 	.name		= "SC1200",
 	.init_hwif	= init_hwif_sc1200,
 	.host_flags	= IDE_HFLAG_SERIALIZE |