netdev - [PATCH net-next 1/6] net: sparx5: enable FDMA on lan969x

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Message-ID: <20250109-sparx5-lan969x-switch-driver-5-v1-1-13d6d8451e63@microchip.com>
Date: Thu, 9 Jan 2025 19:37:53 +0100
From: Daniel Machon <daniel.machon@...rochip.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Andrew Lunn
	<andrew+netdev@...n.ch>, Lars Povlsen <lars.povlsen@...rochip.com>, "Steen
 Hegelund" <Steen.Hegelund@...rochip.com>, <UNGLinuxDriver@...rochip.com>,
	Richard Cochran <richardcochran@...il.com>,
	<jensemil.schulzostergaard@...rochip.com>, <horatiu.vultur@...rochip.com>,
	<jacob.e.keller@...el.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH net-next 1/6] net: sparx5: enable FDMA on lan969x

In a previous series, we made sure that FDMA was not initialized and
started on lan969x. Now that we are going to support it, undo that
change. In addition, make sure the chip ID check is only applicable on
Sparx5, as this is a check that is only relevant on this platform.

Reviewed-by: Steen Hegelund <Steen.Hegelund@...rochip.com>
Signed-off-by: Daniel Machon <daniel.machon@...rochip.com>
---
 drivers/net/ethernet/microchip/sparx5/sparx5_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
index e68277c38adc..340fedd1d897 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
@@ -784,8 +784,9 @@ static int sparx5_start(struct sparx5 *sparx5)
 
 	/* Start Frame DMA with fallback to register based INJ/XTR */
 	err = -ENXIO;
-	if (sparx5->fdma_irq >= 0 && is_sparx5(sparx5)) {
-		if (GCB_CHIP_ID_REV_ID_GET(sparx5->chip_id) > 0)
+	if (sparx5->fdma_irq >= 0) {
+		if (GCB_CHIP_ID_REV_ID_GET(sparx5->chip_id) > 0 ||
+		    !is_sparx5(sparx5))
 			err = devm_request_irq(sparx5->dev,
 					       sparx5->fdma_irq,
 					       sparx5_fdma_handler,

-- 
2.34.1