summaryrefslogtreecommitdiffstats
path: root/drivers/hv/ring_buffer.c
diff options
context:
space:
mode:
authorStephen Hemminger <stephen@networkplumber.org>2017-02-11 23:02:24 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-14 10:20:35 -0800
commite4165a0fad0963bf8b4a59f54d3360ccb6a6d1ea (patch)
treefb91d8f72f6c01e2779e2b0892202bade31907fa /drivers/hv/ring_buffer.c
parent6e47dd3e2938f41d75045bbcb64aa9df3a463b2a (diff)
downloadlinux-e4165a0fad0963bf8b4a59f54d3360ccb6a6d1ea.tar.bz2
vmbus: constify parameters where possible
Functions that just query state of ring buffer can have parameters marked const. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/ring_buffer.c')
-rw-r--r--drivers/hv/ring_buffer.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 75c9eefd55b5..490e9ea098e6 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -96,11 +96,9 @@ hv_set_next_write_location(struct hv_ring_buffer_info *ring_info,
/* Get the next read location for the specified ring buffer. */
static inline u32
-hv_get_next_read_location(struct hv_ring_buffer_info *ring_info)
+hv_get_next_read_location(const struct hv_ring_buffer_info *ring_info)
{
- u32 next = ring_info->ring_buffer->read_index;
-
- return next;
+ return ring_info->ring_buffer->read_index;
}
/*
@@ -108,8 +106,8 @@ hv_get_next_read_location(struct hv_ring_buffer_info *ring_info)
* This allows the caller to skip.
*/
static inline u32
-hv_get_next_readlocation_withoffset(struct hv_ring_buffer_info *ring_info,
- u32 offset)
+hv_get_next_readlocation_withoffset(const struct hv_ring_buffer_info *ring_info,
+ u32 offset)
{
u32 next = ring_info->ring_buffer->read_index;
@@ -130,7 +128,7 @@ hv_set_next_read_location(struct hv_ring_buffer_info *ring_info,
/* Get the size of the ring buffer. */
static inline u32
-hv_get_ring_buffersize(struct hv_ring_buffer_info *ring_info)
+hv_get_ring_buffersize(const struct hv_ring_buffer_info *ring_info)
{
return ring_info->ring_datasize;
}
@@ -147,7 +145,7 @@ hv_get_ring_bufferindices(struct hv_ring_buffer_info *ring_info)
* Assume there is enough room. Handles wrap-around in src case only!!
*/
static u32 hv_copyfrom_ringbuffer(
- struct hv_ring_buffer_info *ring_info,
+ const struct hv_ring_buffer_info *ring_info,
void *dest,
u32 destlen,
u32 start_read_offset)
@@ -171,7 +169,7 @@ static u32 hv_copyfrom_ringbuffer(
static u32 hv_copyto_ringbuffer(
struct hv_ring_buffer_info *ring_info,
u32 start_write_offset,
- void *src,
+ const void *src,
u32 srclen)
{
void *ring_buffer = hv_get_ring_buffer(ring_info);
@@ -186,8 +184,8 @@ static u32 hv_copyto_ringbuffer(
}
/* Get various debug metrics for the specified ring buffer. */
-void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info,
- struct hv_ring_buffer_debug_info *debug_info)
+void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+ struct hv_ring_buffer_debug_info *debug_info)
{
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
@@ -264,7 +262,7 @@ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)
/* Write to the ring buffer. */
int hv_ringbuffer_write(struct vmbus_channel *channel,
- struct kvec *kv_list, u32 kv_count)
+ const struct kvec *kv_list, u32 kv_count)
{
int i = 0;
u32 bytes_avail_towrite;