[PATCH 106/206] Staging: hv: Get rid of the forward declaration of hv_copyto_ringbuffer()

K. Y. Srinivasan
2011-05-09T21:50:06Z

Get rid of the forward declaration by moving the code around.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
---
drivers/staging/hv/ring_buffer.c | 66 +++++++++++++++----------------------
1 files changed, 27 insertions(+), 39 deletions(-)

diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c
index 56521fd..2a461ddee 100644
--- a/drivers/staging/hv/ring_buffer.c
+++ b/drivers/staging/hv/ring_buffer.c
@@ -236,14 +236,37 @@ static u32 hv_copyfrom_ringbuffer(
}

-
-static u32
-hv_copyto_ringbuffer(
+/*
+ *
+ * hv_copyto_ringbuffer()
+ *
+ * Helper routine to copy from source to ring buffer.
+ * Assume there is enough room. Handles wrap-around in dest case only!!
+ *
+ */
+static u32 hv_copyto_ringbuffer(
struct hv_ring_buffer_info *ring_info,
u32 start_write_offset,
void *src,
- u32 srclen);
+ u32 srclen)
+{
+ void *ring_buffer = hv_get_ring_buffer(ring_info);
+ u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);
+ u32 frag_len;
+
+ /* wrap-around detected! */
+ if (srclen > ring_buffer_size - start_write_offset) {
+ frag_len = ring_buffer_size - start_write_offset;
+ memcpy(ring_buffer + start_write_offset, src, frag_len);
+ memcpy(ring_buffer, src + frag_len, srclen - frag_len);
+ } else
+ memcpy(ring_buffer + start_write_offset, src, srclen);

+ start_write_offset += srclen;
+ start_write_offset %= ring_buffer_size;
+
+ return start_write_offset;
+}

/*
*
@@ -498,38 +521,3 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer,

return 0;
}
-
-
-/*
- *
- * hv_copyto_ringbuffer()
- *
- * Helper routine to copy from source to ring buffer.
- * Assume there is enough room. Handles wrap-around in dest case only!!
- *
- */
-static u32
-hv_copyto_ringbuffer(
- struct hv_ring_buffer_info *ring_info,
- u32 start_write_offset,
- void *src,
- u32 srclen)
-{
- void *ring_buffer = hv_get_ring_buffer(ring_info);
- u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);
- u32 frag_len;
-
- /* wrap-around detected! */
- if (srclen > ring_buffer_size - start_write_offset) {
- frag_len = ring_buffer_size - start_write_offset;
- memcpy(ring_buffer + start_write_offset, src, frag_len);
- memcpy(ring_buffer, src + frag_len, srclen - frag_len);
- } else
- memcpy(ring_buffer + start_write_offset, src, srclen);
-
- start_write_offset += srclen;
- start_write_offset %= ring_buffer_size;
-
- return start_write_offset;
-}
-
--
1.7.4.1