From: Sascha Hauer <sha@pengutronix.de>
To: Jules Maselbas <jmaselbas@kalray.eu>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] usb: dwc2: host: Do not map buffer on zero len packet
Date: Thu, 25 Nov 2021 08:45:41 +0100 [thread overview]
Message-ID: <20211125074541.GB28260@pengutronix.de> (raw)
In-Reply-To: <20211122173123.17252-1-jmaselbas@kalray.eu>
On Mon, Nov 22, 2021 at 06:31:23PM +0100, Jules Maselbas wrote:
> The transfer_chunk can be called for zero length packet, in such case
> the buffer pointer is NULL and can fail to be mapped for the device.
>
> In such case the device DMA address can be directly set to 0, as the
> buffer address should be NULL anyway, without calling map/unmap at all.
>
> Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
> ---
> drivers/usb/dwc2/host.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
Applied to master, thanks
Sascha
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prev parent reply other threads:[~2021-11-25 7:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 17:31 Jules Maselbas
2021-11-25 7:45 ` Sascha Hauer [this message]
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