linux-kernel - Re: [PATCH 02/11] ST SPEAr: Added basic header files for SPEAr3xx machine family

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Message-ID: <4B99C567.6070804@st.com>
Date:	Fri, 12 Mar 2010 10:09:03 +0530
From:	Viresh KUMAR <viresh.kumar@...com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, rajeev-dlh.kumar@...com,
	shiraz.hashim@...com, armando.visconti@...com,
	ashish.priyadarshi@...com, linux-kernel@...r.kernel.org,
	vipin.kumar@...com, amit.goel@...com, deepak.sikri@...com
Subject: Re: [PATCH 02/11] ST SPEAr: Added basic header files for SPEAr3xx
 machine family

On 3/11/2010 4:03 PM, Russell King - ARM Linux wrote:
> On Wed, Mar 03, 2010 at 10:37:32AM +0530, Viresh KUMAR wrote:
>> diff --git a/arch/arm/mach-spear3xx/include/mach/dma.h b/arch/arm/mach-spear3xx/include/mach/dma.h
>> new file mode 100644
>> index 0000000..9b93bc6
>> --- /dev/null
>> +++ b/arch/arm/mach-spear3xx/include/mach/dma.h
>> @@ -0,0 +1,18 @@
>> +/*
>> + * arch/arm/mach-spear3xx/include/mach/dma.h
>> + *
>> + * Generic DMA support for SPEAr3xx machine family
>> + *
>> + * Copyright (C) 2009 ST Microelectronics
>> + * Viresh Kumar<viresh.kumar@...com>
>> + *
>> + * This file is licensed under the terms of the GNU General Public
>> + * License version 2. This program is licensed "as is" without any
>> + * warranty of any kind, whether express or implied.
>> + */
>> +
>> +#ifndef __ASM_ARCH_DMA_H
>> +#define __ASM_ARCH_DMA_H
>> +
>> +#endif /* __ASM_ARCH_DMA_H */
>> +
> 
> You don't need to provide this file if you don't use it.
> 

It will be removed.

>> diff --git a/arch/arm/mach-spear3xx/include/mach/vmalloc.h b/arch/arm/mach-spear3xx/include/mach/vmalloc.h
>> new file mode 100644
>> index 0000000..4f236f3
>> --- /dev/null
>> +++ b/arch/arm/mach-spear3xx/include/mach/vmalloc.h
>> @@ -0,0 +1,22 @@
>> +/*
>> + * arch/arm/mach-spear3xx/include/mach/vmalloc.h
>> + *
>> + * Defining Vmalloc area for SPEAr3xx machine family
>> + *
>> + * Copyright (C) 2009 ST Microelectronics
>> + * Viresh Kumar<viresh.kumar@...com>
>> + *
>> + * This file is licensed under the terms of the GNU General Public
>> + * License version 2. This program is licensed "as is" without any
>> + * warranty of any kind, whether express or implied.
>> + */
>> +
>> +#ifndef __ASM_MACH_VMALLOC_H
>> +#define __ASM_MACH_VMALLOC_H
>> +
>> +#include <mach/memory.h>
>> +
>> +#define VMALLOC_SIZE		(0x30000000)
>> +#define VMALLOC_END		(PAGE_OFFSET + VMALLOC_SIZE)
> 
> Don't define it like this - define VMALLOC_END to be the maximum virtual
> address which you can permit the vmalloc area to extend to - which is
> generally the start of your peripheral mappings.
> 
> It's rather pointless defining it in terms of PAGE_OFFSET, because this
> can vary, whereas the start of your peripheral mappings tends to be
> fixed.
> 

OK. Will be changed.


regards,
viresh kumar

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