linux-kernel - Re: [PATCH 4/5] PCI: qcom: Add Qualcomm PCIe controller driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 12 Dec 2014 18:30:03 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Stanimir Varbanov <svarbanov@...sol.com>
Cc:	Rob Herring <robh+dt@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	Grant Likely <grant.likely@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH 4/5] PCI: qcom: Add Qualcomm PCIe controller driver

On Friday 12 December 2014 19:14:00 Stanimir Varbanov wrote:
> The PCIe driver reuse the Designware common code for host
> and MSI initialization, and also program the Qualcomm
> application specific registers.
> 
> Signed-off-by: Stanimir Varbanov <svarbanov@...sol.com>

Looks nice!

> +static int
> +qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
> +{
> +	if (where == PCI_CLASS_REVISION && size == 4) {
> +		*val = readl(pp->dbi_base + PCI_CLASS_REVISION);
> +		*val &= ~(0xffff << 16);
> +		*val |= PCI_CLASS_BRIDGE_PCI << 16;
> +		return PCIBIOS_SUCCESSFUL;
> +	}
> +
> +	return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
> +				size, val);
> +}

Could you add a comment here to explain what this is for?

> +static int __init qcom_pcie_probe(struct platform_device *pdev)
> +{

I think it's a bug to mark this function as __init. It breaks
deferred probing and detaching/reattaching the device trough sysfs.

After you fix that, you can remove the __refdata below.

> +static struct platform_driver __refdata qcom_pcie_driver = {
> +	.probe = qcom_pcie_probe,
> +	.remove = qcom_pcie_remove,
> +	.driver = {
> +		.name = "qcom-pcie",
> +		.of_match_table = qcom_pcie_match,
> +	},
> +};

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/