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Message-Id: <20190930180158.36101-2-snelson@pensando.io>
Date: Mon, 30 Sep 2019 11:01:55 -0700
From: Shannon Nelson <snelson@...sando.io>
To: netdev@...r.kernel.org, davem@...emloft.net
Cc: Shannon Nelson <snelson@...sando.io>
Subject: [PATCH net-next 2/5] ionic: use wait_on_bit_lock() rather than open code
Replace the open-coded ionic_wait_for_bit() with the
kernel's wait_on_bit_lock().
Signed-off-by: Shannon Nelson <snelson@...sando.io>
---
drivers/net/ethernet/pensando/ionic/ionic_ethtool.c | 12 ++++++++----
drivers/net/ethernet/pensando/ionic/ionic_lif.c | 5 +++--
drivers/net/ethernet/pensando/ionic/ionic_lif.h | 9 ++-------
3 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index 7d10265f782a..7760fcd709b4 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -453,6 +453,7 @@ static int ionic_set_ringparam(struct net_device *netdev,
{
struct ionic_lif *lif = netdev_priv(netdev);
bool running;
+ int err;
if (ring->rx_mini_pending || ring->rx_jumbo_pending) {
netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n");
@@ -470,8 +471,9 @@ static int ionic_set_ringparam(struct net_device *netdev,
ring->rx_pending == lif->nrxq_descs)
return 0;
- if (!ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET))
- return -EBUSY;
+ err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
+ if (err)
+ return err;
running = test_bit(IONIC_LIF_UP, lif->state);
if (running)
@@ -504,6 +506,7 @@ static int ionic_set_channels(struct net_device *netdev,
{
struct ionic_lif *lif = netdev_priv(netdev);
bool running;
+ int err;
if (!ch->combined_count || ch->other_count ||
ch->rx_count || ch->tx_count)
@@ -512,8 +515,9 @@ static int ionic_set_channels(struct net_device *netdev,
if (ch->combined_count == lif->nxqs)
return 0;
- if (!ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET))
- return -EBUSY;
+ err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
+ if (err)
+ return err;
running = test_bit(IONIC_LIF_UP, lif->state);
if (running)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 72107a0627a9..4d5883a7e586 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -1619,8 +1619,9 @@ int ionic_reset_queues(struct ionic_lif *lif)
/* Put off the next watchdog timeout */
netif_trans_update(lif->netdev);
- if (!ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET))
- return -EBUSY;
+ err = ionic_wait_for_bit(lif, IONIC_LIF_QUEUE_RESET);
+ if (err)
+ return err;
running = netif_running(lif->netdev);
if (running)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index 812190e729c2..b74f7e9ee82d 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -185,15 +185,10 @@ struct ionic_lif {
#define lif_to_txq(lif, i) (&lif_to_txqcq((lif), i)->q)
#define lif_to_rxq(lif, i) (&lif_to_txqcq((lif), i)->q)
+/* return 0 if successfully set the bit, else non-zero */
static inline int ionic_wait_for_bit(struct ionic_lif *lif, int bitname)
{
- unsigned long tlimit = jiffies + HZ;
-
- while (test_and_set_bit(bitname, lif->state) &&
- time_before(jiffies, tlimit))
- usleep_range(100, 200);
-
- return test_bit(bitname, lif->state);
+ return wait_on_bit_lock(lif->state, bitname, TASK_INTERRUPTIBLE);
}
static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs)
--
2.17.1
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