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[RFC] liquidio: make timeout HZ independent

Message ID 1471880712-8823-1-git-send-email-hofrat@osadl.org
State RFC, archived
Delegated to: David Miller
Headers show

Commit Message

Nicholas Mc Guire Aug. 22, 2016, 3:45 p.m. UTC
schedule_timeout_* takes a timeout in jiffies but the code currently is
passing in a constant which makes this timeout HZ dependent, so pass it
through msecs_to_jiffies() to fix this up.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
---

Problem found by coccinelle script

The below patch sets the timeout to 100ms - it is not clear though if this
is the intent or if it should be longer/shorter as it is not clear
what HZ setting was assumed during design and used for testing.
This needs an ack by someone who knows the driver and can confirm that
100ms is reasonable to wait for draining in-flight packets.

Patch was compile tested with: x86_64_defconfig + CONFIG_LIQUIDIO=m

Patch is against 4.8.0-rc2 (localversion-next is -next-20160822)

 drivers/net/ethernet/cavium/liquidio/lio_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 20d6942..bdd6c82 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -379,7 +379,7 @@  static inline void pcierror_quiesce_device(struct octeon_device *oct)
 	force_io_queues_off(oct);
 
 	/* To allow for in-flight requests */
-	schedule_timeout_uninterruptible(100);
+	schedule_timeout_uninterruptible(msecs_to_jiffies(100));
 
 	if (wait_for_pending_requests(oct))
 		dev_err(&oct->pci_dev->dev, "There were pending requests\n");