swiotlb: rename swiotlb_free to swiotlb_exit

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

arch/powerpc/kernel/dma-swiotlb.c

@@ -121,7 +121,7 @@ static int __init check_swiotlb_enabled(void)
 	if (ppc_swiotlb_enable)
 		swiotlb_print_info();
 	else
-		swiotlb_free();
+		swiotlb_exit();
 
 	return 0;
 }

arch/x86/kernel/pci-swiotlb.c

@@ -120,7 +120,7 @@ void __init pci_swiotlb_late_init(void)
 {
 	/* An IOMMU turned us off. */
 	if (!swiotlb)
-		swiotlb_free();
+		swiotlb_exit();
 	else {
 		printk(KERN_INFO "PCI-DMA: "
 		       "Using software bounce buffering for IO (SWIOTLB)\n");

include/linux/swiotlb.h

@@ -115,10 +115,10 @@ extern int
 swiotlb_dma_supported(struct device *hwdev, u64 mask);
 
 #ifdef CONFIG_SWIOTLB
-extern void __init swiotlb_free(void);
+extern void __init swiotlb_exit(void);
 unsigned int swiotlb_max_segment(void);
 #else
-static inline void swiotlb_free(void) { }
+static inline void swiotlb_exit(void) { }
 static inline unsigned int swiotlb_max_segment(void) { return 0; }
 #endif
 

lib/swiotlb.c

@@ -417,7 +417,7 @@ swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs)
 	return -ENOMEM;
 }
 
-void __init swiotlb_free(void)
+void __init swiotlb_exit(void)
 {
 	if (!io_tlb_orig_addr)
 		return;