From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E9748F5B for ; Sun, 16 Jul 2023 20:26:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6071C433C8; Sun, 16 Jul 2023 20:26:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689539215; bh=/r9coQI/c86bfz2AzFJBAcdPN/2Tw5gNz52TjejPKc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cDPzBuAW0BRGMuEnepMqNMF24y39d/7GiH7tFi7QcQJACTujAiOw12s84oUMa3iN4 jh41tNxRDX+D7M12x3hY0uJ/wWD7abMMqrj1SGLKiu3Q0ocp8+I+eMnG7eckImy7Hp LQXNUuZg8S2YHUEJtSTPlRL9+XLmzpf7RFGl+hAo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Huacai Chen , Liu Peibao , Jianmin Lv , Marc Zyngier Subject: [PATCH 6.4 721/800] irqchip/loongson-pch-pic: Fix potential incorrect hwirq assignment Date: Sun, 16 Jul 2023 21:49:34 +0200 Message-ID: <20230716195005.866220856@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194949.099592437@linuxfoundation.org> References: <20230716194949.099592437@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Liu Peibao commit 783422e704ca0fa41cb2fe9ed79e46b6fe7eae29 upstream. In DeviceTree path, when ht_vec_base is not zero, the hwirq of PCH PIC will be assigned incorrectly. Because when pch_pic_domain_translate() adds the ht_vec_base to hwirq, the hwirq does not have the ht_vec_base subtracted when calling irq_domain_set_info(). The ht_vec_base is designed for the parent irq chip/domain of the PCH PIC. It seems not proper to deal this in callbacks of the PCH PIC domain and let's put this back like the initial commit ef8c01eb64ca ("irqchip: Add Loongson PCH PIC controller"). Fixes: bcdd75c596c8 ("irqchip/loongson-pch-pic: Add ACPI init support") Cc: stable@vger.kernel.org Reviewed-by: Huacai Chen Signed-off-by: Liu Peibao Signed-off-by: Jianmin Lv Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20230614115936.5950-3-lvjianmin@loongson.cn Signed-off-by: Greg Kroah-Hartman --- drivers/irqchip/irq-loongson-pch-pic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/irqchip/irq-loongson-pch-pic.c +++ b/drivers/irqchip/irq-loongson-pch-pic.c @@ -164,7 +164,7 @@ static int pch_pic_domain_translate(stru if (fwspec->param_count < 2) return -EINVAL; - *hwirq = fwspec->param[0] + priv->ht_vec_base; + *hwirq = fwspec->param[0]; *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; } else { if (fwspec->param_count < 1) @@ -196,7 +196,7 @@ static int pch_pic_alloc(struct irq_doma parent_fwspec.fwnode = domain->parent->fwnode; parent_fwspec.param_count = 1; - parent_fwspec.param[0] = hwirq; + parent_fwspec.param[0] = hwirq + priv->ht_vec_base; err = irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec); if (err)