linux-kernel - Re: [v3,33/36] genirq: Use helper function to access irq_data->msi

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]

Message-ID: <556D433C.4040508@linux.intel.com>
Date:	Tue, 02 Jun 2015 13:46:36 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Michael Ellerman <mpe@...erman.id.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Paul Mackerras <paulus@...ba.org>,
	Chris Metcalf <cmetcalf@...hip.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tejun Heo <tj@...nel.org>, Joe Perches <joe@...ches.com>
CC:	linux-ia64@...r.kernel.org,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	linux-pci@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [v3,33/36] genirq: Use helper function to access irq_data->msi_desc

On 2015/6/2 11:45, Michael Ellerman wrote:
> On Mon, 2015-01-06 at 08:05:42 UTC, Jiang Liu wrote:
>> Use irq_data access helper to access irq_data->msi_desc, so we could
>> move msi_desc from struct irq_data into struct irq_common_data later.
>>
>> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
>> ---
>>  arch/powerpc/sysdev/xics/ics-opal.c |    2 +-
>>  arch/powerpc/sysdev/xics/ics-rtas.c |    2 +-
>>
>> diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c
>> index 3996393c254d..27c936c080a6 100644
>> --- a/arch/powerpc/sysdev/xics/ics-opal.c
>> +++ b/arch/powerpc/sysdev/xics/ics-opal.c
>> @@ -72,7 +72,7 @@ static unsigned int ics_opal_startup(struct irq_data *d)
>>  	 * card, using the MSI mask bits. Firmware doesn't appear to unmask
>>  	 * at that level, so we do it here by hand.
>>  	 */
>> -	if (d->msi_desc)
>> +	if (irq_data_get_msi_desc(d))
>>  		pci_msi_unmask_irq(d);
>>  #endif
>>  
>> diff --git a/arch/powerpc/sysdev/xics/ics-rtas.c b/arch/powerpc/sysdev/xics/ics-rtas.c
>> index e2665a9dfc0f..3854dd41558d 100644
>> --- a/arch/powerpc/sysdev/xics/ics-rtas.c
>> +++ b/arch/powerpc/sysdev/xics/ics-rtas.c
>> @@ -75,7 +75,7 @@ static unsigned int ics_rtas_startup(struct irq_data *d)
>>  	 * card, using the MSI mask bits. Firmware doesn't appear to unmask
>>  	 * at that level, so we do it here by hand.
>>  	 */
>> -	if (d->msi_desc)
>> +	if (irq_data_get_msi_desc(d))
>>  		pci_msi_unmask_irq(d);
>>  #endif
>>  	/* unmask it */
> 
> These look OK.
> 
> Though I would point out we already have 16 irq_foo_get_bar() accessors?!
Hi Michael,
	Thanks for review. We are trying to solve some issues introduced
by hierarchy irqdomain/irqchip by splitting irq_data into a common part
(irq_common_data) and per-chip part(irq_data). These accessors are used
to ease the transition and hide implementation details.
Thanks!
Gerry

> 
> Acked-by: Michael Ellerman <mpe@...erman.id.au>
> 
> cheers
> 
--
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/