linux-kernel - Re: [PATCH 1/3] misc: Add crossbar 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]

Message-ID: <5216FE5E.80407@ti.com>
Date:	Fri, 23 Aug 2013 11:47:02 +0530
From:	Rajendra Nayak <rnayak@...com>
To:	Sricharan R <r.sricharan@...com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Tony Lindgren <tony@...mide.com>, Nishanth Menon <nm@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux-OMAP <linux-omap@...r.kernel.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Felipe Balbi <balbi@...com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [PATCH 1/3] misc: Add crossbar driver

On Friday 23 August 2013 11:41 AM, Sricharan R wrote:
> Hi,
> On Friday 23 August 2013 10:17 AM, Rajendra Nayak wrote:
>> On Thursday 22 August 2013 05:03 PM, Sricharan R wrote:
>>>  maps crossbar number<->  to interrupt number and
>>>  calls request_irq(int_no, crossbar_handler,..)
>> So will this mapping happen based on some data passed from DT or
>> just based on whats available when the device does a request_irq()?
>>
>> If its based on whats available then I see an issue when you need
>> to remap something thats already mapped by default (and not used)
>> since you run out of all free ones.
> Yes, when done based on what is available then there is a
> problem when we run out of free ones because we do not
> know which one to replace. I was thinking of something like
> this,
>     1) DT would give a list of all free ones, and also if some are
>         mapped as default and not used, mark those also as free.
> 
>      2) While mapping see if it has a default mapping and use it.
>           otherwise, pick from free list.   
> 
>   This should be ok right ?

yeah, sounds ok.

> 
> Regards,
>  Sricharan
> 

--
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/