X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fsparc%2Fmm%2Fio-unit.c;h=4ccda77d08d6bf7d180036f09d452b2813784676;hb=9028780a3e6d2c3dd940e89b377765cca008b6df;hp=42c1c700c0a70b3c7ca86a13c90b22bf0e84fb5f;hpb=0d1782144e81faf6203075c5fcd0a2f0db91af5b;p=linux-2.6

diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 42c1c700c0..4ccda77d08 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -22,6 +22,7 @@
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
 #include <asm/dma.h>
+#include <asm/oplib.h>
 
 /* #define IOUNIT_DEBUG */
 #ifdef IOUNIT_DEBUG
@@ -41,9 +42,12 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
 	struct linux_prom_registers iommu_promregs[PROMREG_MAX];
 	struct resource r;
 
-	iounit = kmalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
+	iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
+	if (!iounit) {
+		prom_printf("SUN4D: Cannot alloc iounit, halting.\n");
+		prom_halt();
+	}
 
-	memset(iounit, 0, sizeof(*iounit));
 	iounit->limit[0] = IOUNIT_BMAP1_START;
 	iounit->limit[1] = IOUNIT_BMAP2_START;
 	iounit->limit[2] = IOUNIT_BMAPM_START;
@@ -64,6 +68,7 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
 	
 	sbus->iommu = (struct iommu_struct *)iounit;
 	iounit->page_table = xpt;
+	spin_lock_init(&iounit->lock);
 	
 	for (xptend = iounit->page_table + (16 * PAGE_SIZE) / sizeof(iopte_t);
 	     xpt < xptend;)