* [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed
@ 2022-09-26 10:29 Deming Wang
2022-09-27 4:01 ` Jason Wang
2022-09-27 22:29 ` Michael S. Tsirkin
0 siblings, 2 replies; 3+ messages in thread
From: Deming Wang @ 2022-09-26 10:29 UTC (permalink / raw)
To: mst, jasowang, virtualization, linux-kernel; +Cc: Deming Wang
The variable is initialized but it is only used after its assignment.
Signed-off-by: Deming Wang <wangdeming@inspur.com>
---
drivers/virtio/virtio_ring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 8974c34b40fd..abac0a3de440 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1544,7 +1544,7 @@ static bool virtqueue_kick_prepare_packed(struct virtqueue *_vq)
static void detach_buf_packed(struct vring_virtqueue *vq,
unsigned int id, void **ctx)
{
- struct vring_desc_state_packed *state = NULL;
+ struct vring_desc_state_packed *state;
struct vring_packed_desc *desc;
unsigned int i, curr;
--
2.27.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed
2022-09-26 10:29 [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed Deming Wang
@ 2022-09-27 4:01 ` Jason Wang
2022-09-27 22:29 ` Michael S. Tsirkin
1 sibling, 0 replies; 3+ messages in thread
From: Jason Wang @ 2022-09-27 4:01 UTC (permalink / raw)
To: Deming Wang; +Cc: mst, virtualization, linux-kernel
On Mon, Sep 26, 2022 at 7:15 PM Deming Wang <wangdeming@inspur.com> wrote:
>
> The variable is initialized but it is only used after its assignment.
>
> Signed-off-by: Deming Wang <wangdeming@inspur.com>
Acked-by: Jason Wang <jasowang@redhat.com>
> ---
> drivers/virtio/virtio_ring.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 8974c34b40fd..abac0a3de440 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1544,7 +1544,7 @@ static bool virtqueue_kick_prepare_packed(struct virtqueue *_vq)
> static void detach_buf_packed(struct vring_virtqueue *vq,
> unsigned int id, void **ctx)
> {
> - struct vring_desc_state_packed *state = NULL;
> + struct vring_desc_state_packed *state;
> struct vring_packed_desc *desc;
> unsigned int i, curr;
>
> --
> 2.27.0
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed
2022-09-26 10:29 [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed Deming Wang
2022-09-27 4:01 ` Jason Wang
@ 2022-09-27 22:29 ` Michael S. Tsirkin
1 sibling, 0 replies; 3+ messages in thread
From: Michael S. Tsirkin @ 2022-09-27 22:29 UTC (permalink / raw)
To: Deming Wang; +Cc: jasowang, virtualization, linux-kernel
On Mon, Sep 26, 2022 at 06:29:46AM -0400, Deming Wang wrote:
> The variable is initialized but it is only used after its assignment.
>
> Signed-off-by: Deming Wang <wangdeming@inspur.com>
The thing to do here is to move the first assigment to the
initialization.
> ---
> drivers/virtio/virtio_ring.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 8974c34b40fd..abac0a3de440 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1544,7 +1544,7 @@ static bool virtqueue_kick_prepare_packed(struct virtqueue *_vq)
> static void detach_buf_packed(struct vring_virtqueue *vq,
> unsigned int id, void **ctx)
> {
> - struct vring_desc_state_packed *state = NULL;
> + struct vring_desc_state_packed *state;
> struct vring_packed_desc *desc;
> unsigned int i, curr;
>
> --
> 2.27.0
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-09-26 10:29 [PATCH] virtio_ring: Drop unnecessary initialization of detach_buf_packed Deming Wang
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