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From: Thomas Gleixner <tglx@linutronix.de>
To: Jiaxun Yang <jiaxun.yang@flygoat.com>, maz@kernel.org
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Jason Cooper <jason@lakedaemon.net>,
	Rob Herring <robh+dt@kernel.org>, Huacai Chen <chenhc@lemote.com>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-mips@vger.kernel.org
Subject: Re: [PATCH v3 1/6] irqchip: Add Loongson HyperTransport Vector support
Date: Wed, 13 May 2020 14:06:54 +0200	[thread overview]
Message-ID: <87a72c3uox.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20200501092139.2988670-1-jiaxun.yang@flygoat.com>

Jiaxun Yang <jiaxun.yang@flygoat.com> writes:
> +static void htvec_mask_irq(struct irq_data *d)
> +{
> +	struct htvec *priv = irq_data_get_irq_chip_data(d);
> +	void __iomem *addr = priv->base + HTVEC_EN_OFF;
> +	unsigned long flags;
> +	u32 reg;
> +
> +	raw_spin_lock_irqsave(&priv->htvec_lock, flags);

No need for irqsave() these functions are called with interrupts disabled.

> +	addr += VEC_REG_IDX(d->hwirq) * 4;
> +	reg = readl(addr);
> +	reg &= ~BIT(VEC_REG_BIT(d->hwirq));
> +	writel(reg, addr);
> +	raw_spin_unlock_irqrestore(&priv->htvec_lock, flags);
> +}

> +static int htvec_domain_alloc(struct irq_domain *domain, unsigned int virq,
> +				  unsigned int nr_irqs, void *arg)
> +{
> +	struct htvec *priv = domain->host_data;
> +	unsigned long hwirq;
> +	unsigned int type, i;
> +
> +	irq_domain_translate_onecell(domain, arg, &hwirq, &type);
> +
> +	for (i = 0; i < nr_irqs; i++)
> +		irq_domain_set_info(domain, virq + i, hwirq + i, &htvec_irq_chip,
> +					priv, handle_edge_irq, NULL, NULL);

This wants curly brackets and the second line of arguments wants to be
aligned with the first argument:

	for (i = 0; i < nr_irqs; i++) {
		irq_domain_set_info(domain, virq + i, hwirq + i, &htvec_irq_chip,
				    priv, handle_edge_irq, NULL, NULL);
	}

See https://lore.kernel.org/lkml/alpine.DEB.2.20.1701171956290.3645@nanos/

The alignment of arguments wants to be fixed all over the place.

> +static int htvec_of_init(struct device_node *node,
> +				struct device_node *parent)
> +{
> +	struct htvec *priv;
> +	int err, parent_irq[4], num_parents = 0, i;

Please order the variable declaration in reverse fir tree length order:

	int err, parent_irq[4], num_parents = 0, i;
	struct htvec *priv;

That's way better readable than the above. All over the place please.

> +	priv->htvec_domain = irq_domain_create_linear(of_node_to_fwnode(node),
> +						   VEC_COUNT,
> +						   &htvec_domain_ops,
> +						   priv);
> +	if (!priv->htvec_domain) {
> +		pr_err("Failed to create IRQ domain\n");
> +		err = -ENOMEM;
> +		goto iounmap_base;
> +	}
> +
> +	htvec_reset(priv);
> +
> +	for (i = 0; i < num_parents; i++)
> +		irq_set_chained_handler_and_data(parent_irq[i],
> +						htvec_irq_dispatch, priv);

See above.

Thanks,

        tglx

      parent reply	other threads:[~2020-05-13 12:07 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-22 14:24 [PATCH 0/6] Loongson PCH IRQ Support Jiaxun Yang
2020-04-22 14:24 ` [PATCH 1/6] irqchip: Add Loongson HyperTransport Vector support Jiaxun Yang
2020-04-23 13:31   ` Marc Zyngier
2020-04-22 14:24 ` [PATCH 2/6] dt-bindings: interrupt-controller: Add Loongson HTVEC Jiaxun Yang
2020-04-22 14:24 ` [PATCH 3/6] irqchip: Add Loongson PCH PIC controller Jiaxun Yang
2020-04-23  5:56   ` Huacai Chen
2020-04-23 14:23   ` Marc Zyngier
2020-04-22 14:24 ` [PATCH 4/6] dt-bindings: interrupt-controller: Add Loongson PCH PIC Jiaxun Yang
2020-04-23  5:54   ` Huacai Chen
2020-04-22 14:24 ` [PATCH 5/6] irqchip: Add Loongson PCH MSI controller Jiaxun Yang
2020-04-23  5:57   ` Huacai Chen
2020-04-23 14:41   ` Marc Zyngier
2020-04-24  1:33     ` Jiaxun Yang
2020-04-24  8:28       ` Marc Zyngier
2020-04-22 14:24 ` [PATCH 6/6] dt-bindings: interrupt-controller: Add Loongson PCH MSI Jiaxun Yang
2020-04-23  5:55   ` Huacai Chen
2020-04-23 12:43     ` Marc Zyngier
2020-04-24  1:27       ` Huacai Chen
2020-04-23  5:50 ` [PATCH 0/6] Loongson PCH IRQ Support Huacai Chen
2020-04-28  6:32 ` [PATCH v2 1/6] irqchip: Add Loongson HyperTransport Vector support Jiaxun Yang
2020-04-28  6:32   ` [PATCH v2 2/6] dt-bindings: interrupt-controller: Add Loongson HTVEC Jiaxun Yang
2020-04-28  6:32   ` [PATCH v2 3/6] irqchip: Add Loongson PCH PIC controller Jiaxun Yang
2020-05-13 12:09     ` Thomas Gleixner
2020-04-28  6:32   ` [PATCH v2 4/6] dt-bindings: interrupt-controller: Add Loongson PCH PIC Jiaxun Yang
2020-04-28  6:32   ` [PATCH v2 5/6] irqchip: Add Loongson PCH MSI controller Jiaxun Yang
2020-04-28 13:07     ` Marc Zyngier
2020-05-13 12:13     ` Thomas Gleixner
2020-05-13 12:15       ` Thomas Gleixner
2020-05-20 11:51         ` Jiaxun Yang
2020-04-28  6:32   ` [PATCH v2 6/6] dt-bindings: interrupt-controller: Add Loongson PCH MSI Jiaxun Yang
2020-04-28 16:59   ` [PATCH v2 1/6] irqchip: Add Loongson HyperTransport Vector support Marc Zyngier
2020-05-01  9:21 ` [PATCH v3 " Jiaxun Yang
2020-05-01  9:21   ` [PATCH v3 2/6] dt-bindings: interrupt-controller: Add Loongson HTVEC Jiaxun Yang
2020-05-12 16:42     ` Rob Herring
2020-05-01  9:21   ` [PATCH v3 3/6] irqchip: Add Loongson PCH PIC controller Jiaxun Yang
2020-05-01  9:21   ` [PATCH v3 4/6] dt-bindings: interrupt-controller: Add Loongson PCH PIC Jiaxun Yang
2020-05-01  9:21   ` [PATCH v3 5/6] irqchip: Add Loongson PCH MSI controller Jiaxun Yang
2020-05-01  9:21   ` [PATCH v3 6/6] dt-bindings: interrupt-controller: Add Loongson PCH MSI Jiaxun Yang
2020-05-12 20:57     ` Rob Herring
2020-05-12  7:45   ` [PATCH v3 1/6] irqchip: Add Loongson HyperTransport Vector support Jiaxun Yang
2020-05-13 12:06   ` Thomas Gleixner [this message]

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