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vdpasim: Fix some coccinelle warnings

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Fix below warnings reported by coccicheck:

drivers/vdpa/vdpa_sim/vdpa_sim.c:104:1-10: WARNING: Assignment of 0/1 to bool variable
drivers/vdpa/vdpa_sim/vdpa_sim.c:164:7-11: WARNING: Unsigned expression compared with zero: read <= 0
drivers/vdpa/vdpa_sim/vdpa_sim.c:169:7-12: WARNING: Unsigned expression compared with zero: write <= 0

1. The 'ready' variable in vdpasim_virtqueue struct is bool type.
   It is better to initialize vq->ready to false

2. Modify 'read' and 'write' variables type from size_t to ssize_t.
   And preserve the reverse christmas tree ordering of local variables.

Fixes: 2c53d0f64c ("vdpasim: vDPA device simulator")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Samuel Zou <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1588990802-28451-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Samuel Zou 2020-05-09 10:20:02 +08:00 committed by Michael S. Tsirkin
parent 7dd793f37e
commit 18e643cd6c
1 changed files with 4 additions and 3 deletions
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7
drivers/vdpa/vdpa_sim/vdpa_sim.c
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@ -101,7 +101,7 @@ static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx)
static void vdpasim_vq_reset(struct vdpasim_virtqueue *vq)
{
vq->ready = 0;
vq->ready = false;
vq->desc_addr = 0;
vq->driver_addr = 0;
vq->device_addr = 0;
@ -131,9 +131,10 @@ static void vdpasim_work(struct work_struct *work)
vdpasim, work);
struct vdpasim_virtqueue *txq = &vdpasim->vqs[1];
struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0];
size_t read, write, total_write;
int err;
ssize_t read, write;
size_t total_write;
int pkts = 0;
int err;
spin_lock(&vdpasim->lock);