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authorK. Y. Srinivasan <kys@microsoft.com>2011-05-10 07:54:30 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-05-11 13:39:14 -0700
commita9753cbd6cc63e8fd75eab5d458370d49827c177 (patch)
tree971843d17fca32a43655f23b80a7e5d7b5b5ffa5 /drivers/staging/hv/storvsc_drv.c
parent3862ef3e5ed19d27fbd4f39172db1d388d0bdd62 (diff)
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Staging: hv: Get rid of the forward declaration for create_bounce_buffer()
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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/hv/storvsc_drv.c')
-rw-r--r--drivers/staging/hv/storvsc_drv.c61
1 files changed, 29 insertions, 32 deletions
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 9380866..551c48c 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -190,15 +190,41 @@ static int do_bounce_buffer(struct scatterlist *sgl, unsigned int sg_count)
return -1;
}
+static struct scatterlist *create_bounce_buffer(struct scatterlist *sgl,
+ unsigned int sg_count,
+ unsigned int len)
+{
+ int i;
+ int num_pages;
+ struct scatterlist *bounce_sgl;
+ struct page *page_buf;
+
+ num_pages = ALIGN(len, PAGE_SIZE) >> PAGE_SHIFT;
+
+ bounce_sgl = kcalloc(num_pages, sizeof(struct scatterlist), GFP_ATOMIC);
+ if (!bounce_sgl)
+ return NULL;
+
+ for (i = 0; i < num_pages; i++) {
+ page_buf = alloc_page(GFP_ATOMIC);
+ if (!page_buf)
+ goto cleanup;
+ sg_set_page(&bounce_sgl[i], page_buf, 0, 0);
+ }
+
+ return bounce_sgl;
+
+cleanup:
+ destroy_bounce_buffer(bounce_sgl, num_pages);
+ return NULL;
+}
+
/* Static decl */
static int storvsc_probe(struct hv_device *dev);
static int storvsc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd);
static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd);
static int storvsc_remove(struct hv_device *dev);
-static struct scatterlist *create_bounce_buffer(struct scatterlist *sgl,
- unsigned int sg_count,
- unsigned int len);
static unsigned int copy_from_bounce_buffer(struct scatterlist *orig_sgl,
struct scatterlist *bounce_sgl,
unsigned int orig_sgl_count);
@@ -525,35 +551,6 @@ static void storvsc_commmand_completion(struct hv_storvsc_request *request)
kmem_cache_free(host_dev->request_pool, cmd_request);
}
-static struct scatterlist *create_bounce_buffer(struct scatterlist *sgl,
- unsigned int sg_count,
- unsigned int len)
-{
- int i;
- int num_pages;
- struct scatterlist *bounce_sgl;
- struct page *page_buf;
-
- num_pages = ALIGN(len, PAGE_SIZE) >> PAGE_SHIFT;
-
- bounce_sgl = kcalloc(num_pages, sizeof(struct scatterlist), GFP_ATOMIC);
- if (!bounce_sgl)
- return NULL;
-
- for (i = 0; i < num_pages; i++) {
- page_buf = alloc_page(GFP_ATOMIC);
- if (!page_buf)
- goto cleanup;
- sg_set_page(&bounce_sgl[i], page_buf, 0, 0);
- }
-
- return bounce_sgl;
-
-cleanup:
- destroy_bounce_buffer(bounce_sgl, num_pages);
- return NULL;
-}
-
/* Assume the bounce_sgl has enough room ie using the create_bounce_buffer() */
static unsigned int copy_to_bounce_buffer(struct scatterlist *orig_sgl,
struct scatterlist *bounce_sgl,