[PATCH 49/77] Staging: hv: vmbus: Cleanup error values in ringbuffer.c

[K. Y. Srinivasan]

Use standard Linux errno values.

Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
Signed-off-by: Haiyang Zhang <haiya...@microsoft.com>
Signed-off-by: Hank Janssen <hjans...@microsoft.com>
---
 drivers/staging/hv/blkvsc_drv.c  |    2 +-
 drivers/staging/hv/netvsc.c      |    2 +-
 drivers/staging/hv/ring_buffer.c |    6 +++---
 drivers/staging/hv/storvsc_drv.c |    2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 1abe7f4..9898ea3 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -727,7 +727,7 @@ static int blkvsc_do_request(struct block_device_context 
*blkdev,
                } else {
                        ret = blkvsc_submit_request(blkvsc_req,
                                                    blkvsc_request_completion);
-                       if (ret == -1) {
+                       if (ret == -EAGAIN) {
                                pending = 1;
                                list_add_tail(&blkvsc_req->pend_entry,
                                              &blkdev->pending_list);
diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 944dcdc..c060b28 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -565,7 +565,7 @@ retry_send_cmplt:
        if (ret == 0) {
                /* success */
                /* no-op */
-       } else if (ret == -1) {
+       } else if (ret == -EAGAIN) {
                /* no more room...wait a bit and attempt to retry 3 times */
                retries++;
                dev_err(&device->device, "unable to send receive completion pkt"
diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c
index 42f7672..9212699 100644
--- a/drivers/staging/hv/ring_buffer.c
+++ b/drivers/staging/hv/ring_buffer.c
@@ -390,7 +390,7 @@ int hv_ringbuffer_write(struct hv_ring_buffer_info 
*outring_info,
        /* is empty since the read index == write index */
        if (bytes_avail_towrite <= totalbytes_towrite) {
                spin_unlock_irqrestore(&outring_info->ring_lock, flags);
-               return -1;
+               return -EAGAIN;
        }
 
        /* Write to the ring buffer */
@@ -450,7 +450,7 @@ int hv_ringbuffer_peek(struct hv_ring_buffer_info 
*Inring_info,
 
                spin_unlock_irqrestore(&Inring_info->ring_lock, flags);
 
-               return -1;
+               return -EAGAIN;
        }
 
        /* Convert to byte offset */
@@ -496,7 +496,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info 
*inring_info, void *buffer,
        if (bytes_avail_toread < buflen) {
                spin_unlock_irqrestore(&inring_info->ring_lock, flags);
 
-               return -1;
+               return -EAGAIN;
        }
 
        next_read_location =
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index c908fd8..1028689 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -580,7 +580,7 @@ retry_request:
        /* Invokes the vsc to start an IO */
        ret = storvsc_do_io(dev, &cmd_request->request);
 
-       if (ret == -1) {
+       if (ret == -EAGAIN) {
                /* no more space */
 
                if (cmd_request->bounce_sgl_count) {
-- 
1.7.4.1

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