iommu/amd: Fix sparse warnings
A few sparse warnings fire in drivers/iommu/amd_iommu_init.c.
Fix most of them with this patch. Also fix the sparse
warnings in drivers/iommu/irq_remapping.c while at it.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index a33612f..55f2033 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -190,12 +190,6 @@
static u32 alias_table_size; /* size of the alias table */
static u32 rlookup_table_size; /* size if the rlookup table */
-/*
- * This function flushes all internal caches of
- * the IOMMU used by this driver.
- */
-extern void iommu_flush_all_caches(struct amd_iommu *iommu);
-
static int amd_iommu_enable_interrupts(void);
static inline void update_last_devid(u16 devid)
@@ -358,7 +352,7 @@
* mapping and unmapping functions for the IOMMU MMIO space. Each AMD IOMMU in
* the system has one.
*/
-static u8 * __init iommu_map_mmio_space(u64 address)
+static u8 __iomem * __init iommu_map_mmio_space(u64 address)
{
if (!request_mem_region(address, MMIO_REGION_LENGTH, "amd_iommu")) {
pr_err("AMD-Vi: Can not reserve memory region %llx for mmio\n",
@@ -367,7 +361,7 @@
return NULL;
}
- return ioremap_nocache(address, MMIO_REGION_LENGTH);
+ return (u8 __iomem *)ioremap_nocache(address, MMIO_REGION_LENGTH);
}
static void __init iommu_unmap_mmio_space(struct amd_iommu *iommu)
@@ -1217,7 +1211,7 @@
/* called for unity map ACPI definition */
static int __init init_unity_map_range(struct ivmd_header *m)
{
- struct unity_map_entry *e = 0;
+ struct unity_map_entry *e = NULL;
char *s;
e = kzalloc(sizeof(*e), GFP_KERNEL);
@@ -1727,8 +1721,8 @@
IOMMU_INIT_FINISH(amd_iommu_detect,
gart_iommu_hole_init,
- 0,
- 0);
+ NULL,
+ NULL);
bool amd_iommu_v2_supported(void)
{