linux-kernel - [PATCH 5.9 147/152] irqchip/exiu: Fix the index of fwspec for IRQ type

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Message-Id: <20201201084731.100672043@linuxfoundation.org>
Date:   Tue,  1 Dec 2020 09:54:22 +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, Chen Baozi <chenbaozi@...tium.com.cn>,
        Marc Zyngier <maz@...nel.org>, Ard Biesheuvel <ardb@...nel.org>
Subject: [PATCH 5.9 147/152] irqchip/exiu: Fix the index of fwspec for IRQ type

From: Chen Baozi <chenbaozi@...tium.com.cn>

commit d001e41e1b15716e9b759df5ef00510699f85282 upstream.

Since fwspec->param_count of ACPI node is two, the index of IRQ type
in fwspec->param[] should be 1 rather than 2.

Fixes: 3d090a36c8c8 ("irqchip/exiu: Implement ACPI support")
Signed-off-by: Chen Baozi <chenbaozi@...tium.com.cn>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Acked-by: Ard Biesheuvel <ardb@...nel.org>
Link: https://lore.kernel.org/r/20201117032015.11805-1-cbz@baozis.org
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/irqchip/irq-sni-exiu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/irqchip/irq-sni-exiu.c
+++ b/drivers/irqchip/irq-sni-exiu.c
@@ -136,7 +136,7 @@ static int exiu_domain_translate(struct
 		if (fwspec->param_count != 2)
 			return -EINVAL;
 		*hwirq = fwspec->param[0];
-		*type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
+		*type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
 	}
 	return 0;
 }