[PATCH] usb: dwc2: host: Do not map buffer on zero len packet

[Sascha Hauer]

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 at kalray.eu>
> ---
>  drivers/usb/dwc2/host.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

Applied to master, thanks

Sascha


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