linux-kernel - Re: [PATCH] PCI: mediatek: take use of PCI_NUM_INTX

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Date:   Wed, 30 Aug 2017 08:24:39 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     honghui.zhang@...iatek.com
Cc:     bhelgaas@...gle.com, matthias.bgg@...il.com,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        yingjoe.chen@...iatek.com, eddie.huang@...iatek.com,
        ryder.lee@...iatek.com, youlin.pei@...iatek.com,
        hongkun.cao@...iatek.com, sean.wang@...iatek.com,
        xinping.qian@...iatek.com, yt.shen@...iatek.com,
        yong.wu@...iatek.com
Subject: Re: [PATCH] PCI: mediatek: take use of PCI_NUM_INTX

On Wed, Aug 30, 2017 at 09:19:14AM +0800, honghui.zhang@...iatek.com wrote:
> From: Honghui Zhang <honghui.zhang@...iatek.com>
> 
> Switch from using a custom NUM_INTX macro to the generic PCI_NUM_INTX
> definition for the number of INTx interrupts.
> 
> Signed-off-by: Honghui Zhang <honghui.zhang@...iatek.com>

I rebased pci/host-mediatek on top of pci/irq-intx (which adds
PCI_NUM_INTX) and applied this for v4.14, thanks!

> ---
>  drivers/pci/host/pcie-mediatek.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c
> index c567996..5c0ce9b 100644
> --- a/drivers/pci/host/pcie-mediatek.c
> +++ b/drivers/pci/host/pcie-mediatek.c
> @@ -77,7 +77,6 @@
>  #define PCIE_INT_MASK		0x420
>  #define INTX_MASK		GENMASK(19, 16)
>  #define INTX_SHIFT		16
> -#define INTX_NUM		4
>  #define PCIE_INT_STATUS		0x424
>  #define MSI_STATUS		BIT(23)
>  #define PCIE_IMSI_STATUS	0x42c
> @@ -576,7 +575,7 @@ static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port,
>  		return -ENODEV;
>  	}
>  
> -	port->irq_domain = irq_domain_add_linear(pcie_intc_node, INTX_NUM,
> +	port->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX,
>  						 &intx_domain_ops, port);
>  	if (!port->irq_domain) {
>  		dev_err(dev, "failed to get INTx IRQ domain\n");
> @@ -594,7 +593,7 @@ static irqreturn_t mtk_pcie_intr_handler(int irq, void *data)
>  	u32 bit = INTX_SHIFT;
>  
>  	while ((status = readl(port->base + PCIE_INT_STATUS)) & INTX_MASK) {
> -		for_each_set_bit_from(bit, &status, INTX_NUM + INTX_SHIFT) {
> +		for_each_set_bit_from(bit, &status, PCI_NUM_INTX + INTX_SHIFT) {
>  			/* Clear the INTx */
>  			writel(1 << bit, port->base + PCIE_INT_STATUS);
>  			virq = irq_find_mapping(port->irq_domain,
> -- 
> 2.6.4
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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