[PATCH v3 net-next 05/15] net: mscc: ocelot: stop returning IRQ_NONE in ocelot_xtr_irq_handler
From: Vladimir Oltean <olteanv@gmail.com>
Date: 2021-01-18 16:20:02
Subsystem:
networking drivers, ocelot ethernet switch driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
From: Vladimir Oltean <vladimir.oltean@nxp.com> Since the xtr (extraction) IRQ of the ocelot switch is not shared, then if it fired, it means that some data must be present in the queues of the CPU port module. So simplify the code. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- Changes in v2: None. Changes in v2: Patch is new. drivers/net/ethernet/mscc/ocelot_vsc7514.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 30a38df08a21..917243c4a19d 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c@@ -604,10 +604,7 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg) int i = 0, grp = 0; int err = 0; - if (!(ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp))) - return IRQ_NONE; - - do { + while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) { struct skb_shared_hwtstamps *shhwtstamps; struct ocelot_port_private *priv; struct ocelot_port *ocelot_port;
@@ -702,7 +699,7 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg) netif_rx(skb); dev->stats.rx_bytes += len; dev->stats.rx_packets++; - } while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)); + } if (err) while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp))
--
2.25.1