From: Sascha Hauer <s.hauer@pengutronix.de>
To: Antony Pavlov <antonynpavlov@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] drivers: drop unused usb_gadget_{map,unmap}_request()
Date: Tue, 15 Jun 2021 11:22:13 +0200 [thread overview]
Message-ID: <20210615092213.GH9782@pengutronix.de> (raw)
In-Reply-To: <20210614142833.86544-1-antonynpavlov@gmail.com>
On Mon, Jun 14, 2021 at 05:28:33PM +0300, Antony Pavlov wrote:
> There is no code that is dependent on
> usb_gadget_{map,unmap}_request().
My first reaction was: But maybe there *should* be code depending on
that, but
> -#ifdef CONFIG_KERNEL_HAS_DMA
> -
> -int usb_gadget_map_request(struct usb_gadget *gadget,
> - struct usb_request *req, int is_in)
> -{
> - if (req->length == 0)
> - return 0;
> -
> - if (req->num_sgs) {
> - int mapped;
> -
> - mapped = dma_map_sg(&gadget->dev, req->sg, req->num_sgs,
> - is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
Trying to use it would at least fail when trying to link this. We don't
have any implementation for dma_map_sg().
So ok to remove this nonfunctional code.
Sascha
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prev parent reply other threads:[~2021-06-15 15:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-14 14:28 Antony Pavlov
2021-06-15 9:22 ` Sascha Hauer [this message]
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