linux-kernel - Re: [PATCH] powerpc/iommu: Code cleanup for cell/iommu.c

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Date: Thu, 25 Jan 2024 16:20:59 +0800
From: Kunwu Chan <chentao@...inos.cn>
To: Christophe Leroy <christophe.leroy@...roup.eu>,
 "arnd@...db.de" <arnd@...db.de>, "mpe@...erman.id.au" <mpe@...erman.id.au>,
 "npiggin@...il.com" <npiggin@...il.com>,
 "aneesh.kumar@...nel.org" <aneesh.kumar@...nel.org>,
 "naveen.n.rao@...ux.ibm.com" <naveen.n.rao@...ux.ibm.com>
Cc: "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc/iommu: Code cleanup for cell/iommu.c

On 2024/1/25 14:49, Christophe Leroy wrote:
> 
> 
> Le 25/01/2024 à 03:46, Kunwu Chan a écrit :
>> This part was commented from commit 165785e5c0be ("[POWERPC] Cell
>> iommu support") in about 17 years before.
>>
>> If there are no plans to enable this part code in the future,
>> we can remove this dead code.
>>
>> Signed-off-by: Kunwu Chan <chentao@...inos.cn>
>> ---
>>    arch/powerpc/platforms/cell/iommu.c | 16 ----------------
>>    1 file changed, 16 deletions(-)
>>
>> diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
>> index 1202a69b0a20..afce9e64a443 100644
>> --- a/arch/powerpc/platforms/cell/iommu.c
>> +++ b/arch/powerpc/platforms/cell/iommu.c
>> @@ -424,22 +424,6 @@ static void __init cell_iommu_setup_hardware(struct cbe_iommu *iommu,
>>    	cell_iommu_enable_hardware(iommu);
>>    }
>>    
>> -#if 0/* Unused for now */
>> -static struct iommu_window *find_window(struct cbe_iommu *iommu,
>> -		unsigned long offset, unsigned long size)
>> -{
>> -	struct iommu_window *window;
>> -
>> -	/* todo: check for overlapping (but not equal) windows) */
>> -
>> -	list_for_each_entry(window, &(iommu->windows), list) {
>> -		if (window->offset == offset && window->size == size)
>> -			return window;
>> -	}
>> -
>> -	return NULL;
>> -}
>> -#endif
> 
> Same as the other one, please remove the second blank line, don't leave
> two blank lines between the remaining functions.
Thanks for your reply.

I'll check my patches and update in v2.

> 
>>    
>>    static inline u32 cell_iommu_get_ioid(struct device_node *np)
>>    {
-- 
Thanks,
   Kunwu