linux-kernel - Re: [PATCH v2 2/3] aerdrv: Enhanced AER logging

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Message-ID: <1354237958.4275.4.camel@joe-AO722>
Date:	Thu, 29 Nov 2012 17:12:38 -0800
From:	Joe Perches <joe@...ches.com>
To:	Lance Ortiz <lance.ortiz@...com>
Cc:	bhelgaas@...gle.com, lance_ortiz@...mail.com, jiang.liu@...wei.com,
	tony.luck@...el.com, bp@...en8.de, rostedt@...dmis.org,
	mchehab@...hat.com, linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] aerdrv: Enhanced AER logging

On Thu, 2012-11-29 at 15:58 -0700, Lance Ortiz wrote:
> This patch will provide a more reliable and easy way for user-space
> applications to have access to AER logs rather than reading them from the
> message buffer. It also provides a way to notify user-space when an AER
> event occurs.
[]
>  0 files changed, 0 insertions(+), 0 deletions(-)

Those are odd patch statistics

> diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c
[]
> @@ -249,6 +250,10 @@ static const char *cper_pcie_port_type_strs[] = {
>  static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
>  			    const struct acpi_hest_generic_data *gdata)
>  {
> +#ifdef CONFIG_ACPI_APEI_PCIEAER
> +	struct pci_dev *dev;
> +#endif
> +
>  	if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
>  		printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
>  		       pcie->port_type < ARRAY_SIZE(cper_pcie_port_type_strs) ?
> @@ -281,9 +286,17 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
>  	"%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
>  	pfx, pcie->bridge.secondary_status, pcie->bridge.control);
>  #ifdef CONFIG_ACPI_APEI_PCIEAER
> -	if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) {
> +	dev = pci_get_domain_bus_and_slot(pcie->device_id.segment,
> +			pcie->device_id.bus, pcie->device_id.function);
> +	if (!dev)
> +		printk("PCI AER Cannot get PCI device %04x:%02x:%02x.%d\n",
> +			pcie->device_id.segment, pcie->device_id.bus,
> +			pcie->device_id.slot, pcie->device_id.function);
> +
> +	if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO && dev) {
>  		struct aer_capability_regs *aer_regs = (void *)pcie->aer_info;
> -		cper_print_aer(pfx, gdata->error_severity, aer_regs);
> +		cper_print_aer(dev, gdata->error_severity, aer_regs);
> +		pci_dev_put(dev);
>  	}

This could be written something like:
	dev = etc..
	if (!dev) {
		pr_err(etc...)
	} else if {pcie->validation_bits & ...) {
		etc...


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