linux-kernel - [PATCH 4.9 04/22] ARM: 9120/1: Revert "amba: make use of -1 IRQs warn"

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Date:   Wed, 10 Nov 2021 19:43:11 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Rob Herring <robh@...nel.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: [PATCH 4.9 04/22] ARM: 9120/1: Revert "amba: make use of -1 IRQs warn"

From: Wang Kefeng <wangkefeng.wang@...wei.com>

commit eb4f756915875b0ea0757751cd29841f0504d547 upstream.

After commit 77a7300abad7 ("of/irq: Get rid of NO_IRQ usage"),
no irq case has been removed, irq_of_parse_and_map() will return
0 in all cases when get error from parse and map an interrupt into
linux virq space.

amba_device_register() is only used on no-DT initialization, see
  s3c64xx_pl080_init()		arch/arm/mach-s3c/pl080.c
  ep93xx_init_devices()		arch/arm/mach-ep93xx/core.c

They won't set -1 to irq[0], so no need the warn.

This reverts commit 2eac58d5026e4ec8b17ff8b62877fea9e1d2f1b3.

Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/amba/bus.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -356,9 +356,6 @@ static int amba_device_try_add(struct am
 	void __iomem *tmp;
 	int i, ret;
 
-	WARN_ON(dev->irq[0] == (unsigned int)-1);
-	WARN_ON(dev->irq[1] == (unsigned int)-1);
-
 	ret = request_resource(parent, &dev->res);
 	if (ret)
 		goto err_out;