linux-kernel - Re: [PATCH] ion: hisilicon: check the right value after ion_heap

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Date:   Fri, 5 May 2017 11:32:40 +0800
From:   Yisheng Xie <xieyisheng1@...wei.com>
To:     Laura Abbott <labbott@...hat.com>, Yisheng Xie <ysxie@...mail.com>,
        <sumit.semwal@...aro.org>, <gregkh@...uxfoundation.org>,
        <arve@...roid.com>, <riandrews@...roid.com>, <wporter82@...il.com>
CC:     <devel@...verdev.osuosl.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ion: hisilicon: check the right value after
 ion_heap_create

Hi Laura,

On 2017/5/5 1:47, Laura Abbott wrote:
> On 05/04/2017 07:45 AM, Yisheng Xie wrote:
>> From: Yisheng Xie <xieyisheng1@...wei.com>
>>
>> It should check ipdev->heaps[i] whether it is error or null instead of
>> ipdev->heaps, after ion_heap_create() for ipdev->heaps[i].
>>
>> Signed-off-by: Yisheng Xie <xieyisheng1@...wei.com>
>> ---
>>  drivers/staging/android/ion/hisilicon/hi6220_ion.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/android/ion/hisilicon/hi6220_ion.c b/drivers/staging/android/ion/hisilicon/hi6220_ion.c
>> index 0de7897..7f8eda5 100644
>> --- a/drivers/staging/android/ion/hisilicon/hi6220_ion.c
>> +++ b/drivers/staging/android/ion/hisilicon/hi6220_ion.c
>> @@ -66,7 +66,7 @@ static int hi6220_ion_probe(struct platform_device *pdev)
>>  
>>  	for (i = 0; i < ipdev->data->nr; i++) {
>>  		ipdev->heaps[i] = ion_heap_create(&ipdev->data->heaps[i]);
>> -		if (!ipdev->heaps) {
>> +		if (IS_ERR_OR_NULL(ipdev->heaps[i])) {
>>  			ion_destroy_platform_data(ipdev->data);
>>  			return -ENOMEM;
>>  		}
>>
> 
> This file was removed in a recent clean up series.
I see, but maybe you should clean up more totally, I mean you should also
remove ./drivers/staging/android/ion/devicetree.txt for it is also useless.

Thanks
Yisheng Xie