Hi,
John Youn <johny...@synopsys.com> writes:
> diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
> index 3ab4d60..85fc459 100644
> --- a/drivers/usb/dwc2/gadget.c
> +++ b/drivers/usb/dwc2/gadget.c
> @@ -324,6 +324,56 @@ static void dwc2_hsotg_unmap_dma(struct dwc2_hsotg
> *hsotg,
> usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in);
> }
>
> +/*
> + * dwc2_gadget_alloc_ctrl_desc_chains - allocate DMA descriptor chains
> + * for Control endpoint
> + * @hsotg: The device state.
> + *
> + * This function will allocate 4 descriptor chains for EP 0: 2 for
> + * Setup stage, per one for IN and OUT data/status transactions.
> + */
> +static int dwc2_gadget_alloc_ctrl_desc_chains(struct dwc2_hsotg *hsotg)
> +{
> + hsotg->setup_desc[0] =
> + dmam_alloc_coherent(hsotg->dev,
> + sizeof(struct dwc2_dma_desc),
> + &hsotg->setup_desc_dma[0],
> + GFP_ATOMIC);doesn't seem like any of this needs to be GFP_ATOMIC > +fail: > + dev_err(hsotg->dev, "%s: allocation failed for EP0 descs\n", __func__); -ENOMEM error messages are already printed for you, just remove this line. -- balbi
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