diff options
| author |   Michael Chan <mchan@broadcom.com> | 2011-06-08 19:29:32 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-06-08 23:52:36 -0700 |
| commit | 93736656138e6d2f39f19c1d68f9ef81cfc9dd66 (patch) | |
| tree | c5ff0e79d7ed67bb8078c5b32e2db35b89125a9a /drivers | |
| parent | inetpeer: lower false sharing effect (diff) | |
| download | linux-dev-93736656138e6d2f39f19c1d68f9ef81cfc9dd66.tar.xz linux-dev-93736656138e6d2f39f19c1d68f9ef81cfc9dd66.zip | |
cnic: Fix interrupt logic
We need to keep looping until cnic_get_kcqes() returns 0. cnic_get_kcqes()
returns a maximum of 64 entries. If there are more entries in the queue
and we don't loop back, the remaining entries may not be serviced for a
long time.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/cnic.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c index 11a92afdf982..5c0a669dfa5f 100644 --- a/drivers/net/cnic.c +++ b/drivers/net/cnic.c @@ -2778,13 +2778,10 @@ static u32 cnic_service_bnx2_queues(struct cnic_dev *dev) /* Tell compiler that status_blk fields can change. */ barrier(); - if (status_idx != *cp->kcq1.status_idx_ptr) { - status_idx = (u16) *cp->kcq1.status_idx_ptr; - /* status block index must be read first */ - rmb(); - cp->kwq_con_idx = *cp->kwq_con_idx_ptr; - } else - break; + status_idx = (u16) *cp->kcq1.status_idx_ptr; + /* status block index must be read first */ + rmb(); + cp->kwq_con_idx = *cp->kwq_con_idx_ptr; } CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx); @@ -2908,8 +2905,6 @@ static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info) /* Tell compiler that sblk fields can change. */ barrier(); - if (last_status == *info->status_idx_ptr) - break; last_status = *info->status_idx_ptr; /* status block index must be read before reading the KCQ */ |