提交 e6cdfcc5 编写于 作者: P Parvi Kaustubhi 提交者: David S. Miller

enic: reset fetch index

Since we are allowing rx ring size modification, reset fetch index
everytime. Otherwise it could have a stale value that can lead to a null
pointer dereference.
Signed-off-by: NGovindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: NParvi Kaustubhi <pkaustub@cisco.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 59c1cecc
......@@ -139,20 +139,8 @@ void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u32 fetch_index = 0;
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */
/* Hardware surprise removal: reset fetch_index */
fetch_index = 0;
}
vnic_rq_init_start(rq, cq_index,
fetch_index, fetch_index,
error_interrupt_enable,
error_interrupt_offset);
vnic_rq_init_start(rq, cq_index, 0, 0, error_interrupt_enable,
error_interrupt_offset);
}
unsigned int vnic_rq_error_status(struct vnic_rq *rq)
......
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