netdev - [PATCH net-next 18/22] can: rcar_canfd: Enhance multi_channel

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Message-ID: <20250522084128.501049-19-mkl@pengutronix.de>
Date: Thu, 22 May 2025 10:36:46 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Biju Das <biju.das.jz@...renesas.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 18/22] can: rcar_canfd: Enhance multi_channel_irqs handling

From: Biju Das <biju.das.jz@...renesas.com>

Currently multi_channel_irqs has only 2 channels. But RZ/G3E has six
channels. Enhance multi_channel_irqs handling to support more than two
channels.

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Link: https://patch.msgid.link/20250417054320.14100-19-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/rcar/rcar_canfd.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 0bf0e88dfe25..6a9c970364cb 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1857,16 +1857,19 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
 
 	if (info->multi_channel_irqs) {
 		char *irq_name;
+		char name[10];
 		int err_irq;
 		int tx_irq;
 
-		err_irq = platform_get_irq_byname(pdev, ch == 0 ? "ch0_err" : "ch1_err");
+		scnprintf(name, sizeof(name), "ch%u_err", ch);
+		err_irq = platform_get_irq_byname(pdev, name);
 		if (err_irq < 0) {
 			err = err_irq;
 			goto fail;
 		}
 
-		tx_irq = platform_get_irq_byname(pdev, ch == 0 ? "ch0_trx" : "ch1_trx");
+		scnprintf(name, sizeof(name), "ch%u_trx", ch);
+		tx_irq = platform_get_irq_byname(pdev, name);
 		if (tx_irq < 0) {
 			err = tx_irq;
 			goto fail;
-- 
2.47.2