linux-kernel - Re: [PATCH v2 12/22] MIPS/Octeon/MSI: Use MSI chip framework to configure MSI/MSI-X irq

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Message-ID: <5424CB70.9020800@huawei.com>
Date:	Fri, 26 Sep 2014 10:12:00 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Thierry Reding <thierry.reding@...il.com>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Xinwei Hu <huxinwei@...wei.com>,
	Wuyun <wuyun.wu@...wei.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	<linux-arch@...r.kernel.org>, <arnab.basu@...escale.com>,
	<Bharat.Bhushan@...escale.com>, <x86@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	<xen-devel@...ts.xenproject.org>, Joerg Roedel <joro@...tes.org>,
	<iommu@...ts.linux-foundation.org>, <linux-mips@...ux-mips.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-s390@...r.kernel.org>,
	Sebastian Ott <sebott@...ux.vnet.ibm.com>,
	"Tony Luck" <tony.luck@...el.com>, <linux-ia64@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	<sparclinux@...r.kernel.org>, Chris Metcalf <cmetcalf@...era.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Lucas Stach <l.stach@...gutronix.de>,
	David Vrabel <david.vrabel@...rix.com>,
	"Sergei Shtylyov" <sergei.shtylyov@...entembedded.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: Re: [PATCH v2 12/22] MIPS/Octeon/MSI: Use MSI chip framework to configure
 MSI/MSI-X irq

On 2014/9/25 15:34, Thierry Reding wrote:
> On Thu, Sep 25, 2014 at 11:14:22AM +0800, Yijing Wang wrote:
> [...]
>> diff --git a/arch/mips/pci/msi-octeon.c b/arch/mips/pci/msi-octeon.c
> [...]
>> @@ -132,12 +132,12 @@ msi_irq_allocated:
>>  	/* Make sure the search for available interrupts didn't fail */
>>  	if (irq >= 64) {
>>  		if (request_private_bits) {
>> -			pr_err("arch_setup_msi_irq: Unable to find %d free interrupts, trying just one",
>> +			pr_err("octeon_setup_msi_irq: Unable to find %d free interrupts, trying just one",
>>  			       1 << request_private_bits);
> 
> Perhaps while at it make this (and other similar changes in this patch):
> 
> 	pr_err("%s(): Unable to ...", __func__, ...);

Will update it, thanks!

> 
> So that it becomes more resilient against this kind of rename?
> 
>>  			request_private_bits = 0;
>>  			goto try_only_one;
>>  		} else
>> -			panic("arch_setup_msi_irq: Unable to find a free MSI interrupt");
>> +			panic("octeon_setup_msi_irq: Unable to find a free MSI interrupt");
> 
>> @@ -210,14 +210,13 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
>>  
>>  	return 0;
>>  }
>> -
> 
> This...

OK

> 
>> @@ -240,7 +239,7 @@ void arch_teardown_msi_irq(unsigned int irq)
>>  	 */
>>  	number_irqs = 0;
>>  	while ((irq0 + number_irqs < 64) &&
>> -	       (msi_multiple_irq_bitmask[index]
>> +		(msi_multiple_irq_bitmask[index]
> 
> ... and this seem like unrelated whitespace changes.

OK

> 
>>  		& (1ull << (irq0 + number_irqs))))
>>  		number_irqs++;
>>  	number_irqs++;
>> @@ -249,8 +248,8 @@ void arch_teardown_msi_irq(unsigned int irq)
>>  	/* Shift the mask to the correct bit location */
>>  	bitmask <<= irq0;
>>  	if ((msi_free_irq_bitmask[index] & bitmask) != bitmask)
>> -		panic("arch_teardown_msi_irq: Attempted to teardown MSI "
>> -		      "interrupt (%d) not in use", irq);
>> +		panic("octeon_teardown_msi_irq: Attempted to teardown MSI "
>> +			"interrupt (%d) not in use", irq);
> 
> And the second line here also needlessly changes the indentation.

OK
> 
> Thierry
> 


-- 
Thanks!
Yijing

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