diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 8d7a363..7a458d5 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -879,7 +879,7 @@
 		return NULL;
 	}
 
-	isi->addr = ioremap(hpa, 4096);
+	isi->addr = ioremap_nocache(hpa, 4096);
 	isi->isi_hpa = hpa;
 	isi->isi_version = iosapic_rd_version(isi);
 	isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1;