request_firmware in DMA region

[Greg KH]

On Wed, Mar 18, 2020 at 02:29:24PM +0000, Lucas Tanure wrote:
> Hi,
> 
> I'm sending firmware to usb device with this code:
> But it`s falling because the request firmware call didn't put my firmware in
> a DMA capable area. That's my guess.
> 
> So how to request firmware in DMA capable area?

kmalloc your buffer used for USB transfers.

Do you have a pointer to your driver anywhere?  The code you show below
isn't in any kernel source that I can see.

thanks,

greg k-h