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SubjectRe: [PATCH 1/2] media: ipu3-cio2: Use dma_zalloc_coherent to replace dma_alloc_coherent + memset
On 2018/8/24 10:58, Bing Bu Cao wrote:
> Hi, Jiang
>
> This looks fine for me in ipu3-cio2.
> Actually, we already have this change locally, but I think we miss submit it to community.
> Thanks!
It's ok, Anyway, Thank you for let me know that.

Best wishes,
zhong jiang
> On 08/18/2018 11:16 PM, zhong jiang wrote:
>> dma_zalloc_coherent has implemented the dma_alloc_coherent() + memset(),
>> We prefer to dma_zalloc_coherent instead of open-codeing.
>>
>> Signed-off-by: zhong jiang <zhongjiang@huawei.com>
>> ---
>> drivers/media/pci/intel/ipu3/ipu3-cio2.c | 6 ++----
>> 1 file changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
>> index 2902715..f0c6374 100644
>> --- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
>> +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
>> @@ -218,13 +218,11 @@ static int cio2_fbpt_init(struct cio2_device *cio2, struct cio2_queue *q)
>> {
>> struct device *dev = &cio2->pci_dev->dev;
>>
>> - q->fbpt = dma_alloc_coherent(dev, CIO2_FBPT_SIZE, &q->fbpt_bus_addr,
>> - GFP_KERNEL);
>> + q->fbpt = dma_zalloc_coherent(dev, CIO2_FBPT_SIZE, &q->fbpt_bus_addr,
>> + GFP_KERNEL);
>> if (!q->fbpt)
>> return -ENOMEM;
>>
>> - memset(q->fbpt, 0, CIO2_FBPT_SIZE);
>> -
>> return 0;
>> }
>>
>
> .
>


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