1 files changed, 22 insertions, 13 deletions

diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 22e1be5..fba67c3 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -672,18 +672,20 @@ static void sabre_scan_bus(struct pci_pbm_info *pbm)
 	sabre_register_error_handlers(pbm);
 }
 
-static void sabre_iommu_init(struct pci_pbm_info *pbm,
-			     int tsbsize, unsigned long dvma_offset,
-			     u32 dma_mask)
+static int sabre_iommu_init(struct pci_pbm_info *pbm,
+			    int tsbsize, unsigned long dvma_offset,
+			    u32 dma_mask)
 {
 	struct iommu *iommu = pbm->iommu;
 	unsigned long i;
 	u64 control;
+	int err;
 
 	/* Register addresses. */
 	iommu->iommu_control  = pbm->controller_regs + SABRE_IOMMU_CONTROL;
 	iommu->iommu_tsbbase  = pbm->controller_regs + SABRE_IOMMU_TSBBASE;
 	iommu->iommu_flush    = pbm->controller_regs + SABRE_IOMMU_FLUSH;
+	iommu->iommu_tags     = iommu->iommu_flush + (0xa580UL - 0x0210UL);
 	iommu->write_complete_reg = pbm->controller_regs + SABRE_WRSYNC;
 	/* Sabre's IOMMU lacks ctx flushing. */
 	iommu->iommu_ctxflush = 0;
@@ -701,7 +703,10 @@ static void sabre_iommu_init(struct pci_pbm_info *pbm,
 	/* Leave diag mode enabled for full-flushing done
 	 * in pci_iommu.c
 	 */
-	pci_iommu_table_init(iommu, tsbsize * 1024 * 8, dvma_offset, dma_mask);
+	err = iommu_table_init(iommu, tsbsize * 1024 * 8,
+			       dvma_offset, dma_mask);
+	if (err)
+		return err;
 
 	sabre_write(pbm->controller_regs + SABRE_IOMMU_TSBBASE,
 		    __pa(iommu->page_table));
@@ -722,6 +727,8 @@ static void sabre_iommu_init(struct pci_pbm_info *pbm,
 		break;
 	}
 	sabre_write(pbm->controller_regs + SABRE_IOMMU_CONTROL, control);
+
+	return 0;
 }
 
 static void sabre_pbm_init(struct pci_controller_info *p, struct pci_pbm_info *pbm, struct device_node *dp)
@@ -775,16 +782,12 @@ void sabre_init(struct device_node *dp, char *model_name)
 	}
 
 	p = kzalloc(sizeof(*p), GFP_ATOMIC);
-	if (!p) {
-		prom_printf("SABRE: Error, kmalloc(pci_controller_info) failed.\n");
-		prom_halt();
-	}
+	if (!p)
+		goto fatal_memory_error;
 
 	iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
-	if (!iommu) {
-		prom_printf("SABRE: Error, kmalloc(pci_iommu) failed.\n");
-		prom_halt();
-	}
+	if (!iommu)
+		goto fatal_memory_error;
 	pbm = &p->pbm_A;
 	pbm->iommu = iommu;
 
@@ -847,10 +850,16 @@ void sabre_init(struct device_node *dp, char *model_name)
 			prom_halt();
 	}
 
-	sabre_iommu_init(pbm, tsbsize, vdma[0], dma_mask);
+	if (sabre_iommu_init(pbm, tsbsize, vdma[0], dma_mask))
+		goto fatal_memory_error;
 
 	/*
 	 * Look for APB underneath.
 	 */
 	sabre_pbm_init(p, pbm, dp);
+	return;
+
+fatal_memory_error:
+	prom_printf("SABRE: Fatal memory allocation error.\n");
+	prom_halt();
 }