diff mbox series

swiotlb-zen: Convert to use macro

Message ID 1567366136-874-1-git-send-email-jrdr.linux@gmail.com (mailing list archive)
State Accepted
Commit e6fa0dc86734f99b037b36b8682133efc2b6e16b
Headers show
Series swiotlb-zen: Convert to use macro | expand

Commit Message

Souptick Joarder Sept. 1, 2019, 7:28 p.m. UTC 
Rather than using static int max_dma_bits, this
can be coverted to use as macro.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
---
 drivers/xen/swiotlb-xen.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Jürgen Groß Sept. 2, 2019, 7:20 a.m. UTC | #1 
On 01.09.19 21:28, Souptick Joarder wrote:
> Rather than using static int max_dma_bits, this
> can be coverted to use as macro.
> 
> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>

s/zen/xen/ in the patch title, other than that:

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen
diff mbox series

Patch

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index ae1df49..d1eced5 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -38,6 +38,7 @@ 
 #include <asm/xen/page-coherent.h>
 
 #include <trace/events/swiotlb.h>
+#define MAX_DMA_BITS 32
 /*
  * Used to do a quick range check in swiotlb_tbl_unmap_single and
  * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this
@@ -114,8 +115,6 @@  static int is_xen_swiotlb_buffer(dma_addr_t dma_addr)
 	return 0;
 }
 
-static int max_dma_bits = 32;
-
 static int
 xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)
 {
@@ -135,7 +134,7 @@  static int is_xen_swiotlb_buffer(dma_addr_t dma_addr)
 				p + (i << IO_TLB_SHIFT),
 				get_order(slabs << IO_TLB_SHIFT),
 				dma_bits, &dma_handle);
-		} while (rc && dma_bits++ < max_dma_bits);
+		} while (rc && dma_bits++ < MAX_DMA_BITS);
 		if (rc)
 			return rc;