From: thomas.petazzoni@free-electrons•com (Thomas Petazzoni)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 2/2] pci: host: new driver for Marvell Armada 7K/8K PCIe controller
Date: Mon, 11 Apr 2016 17:56:51 +0200 [thread overview]
Message-ID: <20160411175651.5f32a990@free-electrons.com> (raw)
In-Reply-To: <20160327140348.GA19498@lunn.ch>
Hello,
On Sun, 27 Mar 2016 16:03:48 +0200, Andrew Lunn wrote:
> > +static irqreturn_t armada8k_pcie_irq_handler(int irq, void *arg)
> > +{
> > + struct pcie_port *pp = arg;
> > + struct armada8k_pcie *pcie = to_armada8k_pcie(pp);
> > + void __iomem *base = pcie->base;
> > + u32 val;
> > +
> > + val = readl(base + PCIE_GLOBAL_INT_CAUSE1_REG);
> > + writel(val, base + PCIE_GLOBAL_INT_CAUSE1_REG);
> > +
> > + return IRQ_HANDLED;
>
> Maybe a comment as to why you are just throwing them away.
I'll have a look into this.
> > +static int armada8k_pcie_probe(struct platform_device *pdev)
> > +{
> > + struct armada8k_pcie *pcie;
> > + struct pcie_port *pp;
> > + struct device *dev = &pdev->dev;
> > + struct resource *base;
> > + int ret;
> > +
> > + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
> > + if (!pcie)
> > + return -ENOMEM;
> > +
> > + pcie->main_clk = devm_clk_get(dev, "main");
> > + if (!IS_ERR(pcie->main_clk))
> > + clk_prepare_enable(pcie->main_clk);
> > +
> > + pcie->lane_clk = devm_clk_get(dev, "port");
> > + if (!IS_ERR(pcie->lane_clk))
> > + clk_prepare_enable(pcie->lane_clk);
>
> Any need to handle -EPRODE_DEFERED here?
Is this needed? The clocks are registered in of_clk_init(), i.e at
time_init() time. This is way before the device drivers get probed, no?
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2016-04-11 15:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-27 9:30 [PATCH 0/2] pci: host: new driver for Marvell Armada 7K/8K PCIe controller Thomas Petazzoni
2016-03-27 9:30 ` [PATCH 1/2] dt-bindings: pci: add DT binding " Thomas Petazzoni
2016-03-28 20:46 ` Rob Herring
2016-03-28 21:18 ` Arnd Bergmann
2016-04-14 13:33 ` Thomas Petazzoni
2016-03-27 9:30 ` [PATCH 2/2] pci: host: new driver " Thomas Petazzoni
2016-03-27 14:03 ` Andrew Lunn
2016-04-11 15:56 ` Thomas Petazzoni [this message]
2016-04-14 14:25 ` Thomas Petazzoni
2016-03-28 21:21 ` Arnd Bergmann
2016-04-14 14:26 ` Thomas Petazzoni
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