From: Greg KH <greg@kroah.com>
To: Lucas Tanure <tanure@linux.com>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: request_firmware in DMA region
Date: Wed, 18 Mar 2020 15:46:31 +0100 [thread overview]
Message-ID: <20200318144631.GB2860387@kroah.com> (raw)
In-Reply-To: <06892b25-65bb-0379-da42-cbae5cbfce38@linux.com>
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
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next prev parent reply other threads:[~2020-03-18 14:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 14:29 request_firmware in DMA region Lucas Tanure
2020-03-18 14:46 ` Greg KH [this message]
2020-03-18 16:55 ` Lucas Tanure
2020-03-18 17:09 ` Greg KH
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