| Message ID | 1263393265.2797.4.camel@achroite.uk.solarflarecom.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Ben Hutchings <bhutchings@solarflare.com> Date: Wed, 13 Jan 2010 14:34:25 +0000 > 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> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/sfc/mcdi.c b/drivers/net/sfc/mcdi.c index 683353b..0d4eba7 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();
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> --- drivers/net/sfc/mcdi.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)