netdev - [PATCH] net: mvpp2: Prepare to use the new tasklet API

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Date:   Mon, 17 Aug 2020 14:16:05 +0530
From:   Allen Pais <allen.cryptic@...il.com>
To:     m.grzeschik@...gutronix.de, davem@...emloft.net, paulus@...ba.org,
        oliver@...kum.org, woojung.huh@...rochip.com, petkan@...leusys.com
Cc:     keescook@...omium.org, netdev@...r.kernel.org,
        linux-ppp@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Romain Perier <romain.perier@...eris.fr>,
        Romain Perier <romain.perier@...il.com>,
        Allen Pais <allen.lkml@...il.com>
Subject: [PATCH] net: mvpp2: Prepare to use the new tasklet API

From: Romain Perier <romain.perier@...eris.fr>

The future tasklet API will no longer allow to pass an arbitrary
"unsigned long" data parameter. The tasklet data structure will need to
be embedded into a data structure that will be retrieved from the tasklet
handler. Currently, there are no ways to retrieve the "struct mvpp2_port
*" from a given "struct mvpp2_port_pcpu *". This commit adds a new field
to get the address of the main port for each pcpu context.

Signed-off-by: Romain Perier <romain.perier@...il.com>
Signed-off-by: Allen Pais <allen.lkml@...il.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2.h      | 1 +
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index 32753cc771bf..198860a4527d 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -861,6 +861,7 @@ struct mvpp2_port_pcpu {
 	struct hrtimer tx_done_timer;
 	struct net_device *dev;
 	bool timer_scheduled;
+	struct mvpp2_port *port;
 };
 
 struct mvpp2_queue_vector {
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 2a8a5842eaef..fb45f86dcb12 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -6025,6 +6025,7 @@ static int mvpp2_port_probe(struct platform_device *pdev,
 		err = -ENOMEM;
 		goto err_free_txq_pcpu;
 	}
+	port->pcpu->port = port;
 
 	if (!port->has_tx_irqs) {
 		for (thread = 0; thread < priv->nthreads; thread++) {
-- 
2.17.1