diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2010-01-13 07:34:25 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-14 04:12:47 +0300 |
| commit | 55029c1d65158aea9672c5dfadb43a57f23e3100 (patch) | |
| tree | 2222cdb3a0c81256f89d5e26b299239e66497769 | |
| parent | baf86c9d36826fab0160251bbc87dfab3af48a21 (diff) | |
| download | linux-55029c1d65158aea9672c5dfadb43a57f23e3100.tar.xz | |
sfc: Fix polling for slow MCDI operations
When the interface is down and we are using polled mode for MCDI
operations, we busy-wait for completion for approximately 1 jiffy
using udelay() and then back off to schedule(). But the completion
will not wake the task, since we are using polled mode! We must use
schedule_timeout_uninterruptible() instead.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/sfc/mcdi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/sfc/mcdi.c b/drivers/net/sfc/mcdi.c index 683353b904c7..0d4eba7266ec 100644 --- a/drivers/net/sfc/mcdi.c +++ b/drivers/net/sfc/mcdi.c @@ -142,8 +142,9 @@ static int efx_mcdi_poll(struct efx_nic *efx) if (spins != 0) { --spins; udelay(1); - } else - schedule(); + } else { + schedule_timeout_uninterruptible(1); + } time = get_seconds(); |