Hi Anurag,
On Fri, Jun 07, 2019 at 09:49:59AM +0300, Felipe Balbi wrote:
> Anurag Kumar Vulisha writes:
> >>> The dma_map_sg() merges sg1 & sg2 memory regions into sg1-
> >>>dma_address.
> >>> Similarly sg3 & sg4 into sg2->dma_address, sg5 & sg6 into the
> >>> sg3->dma_address and sg6 & sg8 into
Hi,
Anurag Kumar Vulisha writes:
>>> The dma_map_sg() merges sg1 & sg2 memory regions into sg1-
>>>dma_address.
>>> Similarly sg3 & sg4 into sg2->dma_address, sg5 & sg6 into the
>>> sg3->dma_address and sg6 & sg8 into sg4->dma_address. Here the
>>memory
>>> regions are merged but the page_link
Vulisha
>Subject: Re: [PATCH] usb: dwc3: gadget: Correct the logic for finding last SG
>entry
>
>
>Hi,
>
>Anurag Kumar Vulisha writes:
>> As a process of preparing TRBs usb_gadget_map_request_by_dev() is
>> called from dwc3_prepare_trbs() for mapping the r
Hi,
Anurag Kumar Vulisha writes:
> As a process of preparing TRBs usb_gadget_map_request_by_dev() is
> called from dwc3_prepare_trbs() for mapping the request. This will
> call dma_map_sg() if req->num_sgs are greater than 0. dma_map_sg()
> will map the sg entries in sglist and return the
As a process of preparing TRBs usb_gadget_map_request_by_dev() is
called from dwc3_prepare_trbs() for mapping the request. This will
call dma_map_sg() if req->num_sgs are greater than 0. dma_map_sg()
will map the sg entries in sglist and return the number of mapped SGs.
As a part of mapping, some
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