From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Sun, 25 Oct 2015 12:00:09 +0100
Subject: [U-Boot] [PATCH 2/2] musb: sunxi: Implement dfu_usb_get_reset()
In-Reply-To: <1445748287-12421-3-git-send-email-siarhei.siamashka@gmail.com>
References: <1445748287-12421-1-git-send-email-siarhei.siamashka@gmail.com>
 <1445748287-12421-3-git-send-email-siarhei.siamashka@gmail.com>
Message-ID: <201510251200.09867.marex@denx.de>
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To: u-boot@lists.denx.de

On Sunday, October 25, 2015 at 05:44:47 AM, Siarhei Siamashka wrote:
> This is necessary to distinguish between the "dfu-util --detach" and
> the "dfu-util --reset" requests.
> 
> The default weak implementation of dfu_usb_get_reset() unconditionally
> reboots the device, but we want to be able to continue the boot.scr
> execution after writing the kernel, fdt and ramdisk to RAM via DFU.
> 
> Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
> ---
>  drivers/usb/musb-new/sunxi.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
> index a146c08..5eb8d19 100644
> --- a/drivers/usb/musb-new/sunxi.c
> +++ b/drivers/usb/musb-new/sunxi.c
> @@ -166,6 +166,17 @@ static void USBC_ConfigFIFO_Base(void)
>  }
> 
>  /*************************************************************************
> ***** + * Needed for the DFU polling magic
> +
> **************************************************************************
> ****/ +
> +static u8 last_int_usb;
> +
> +bool dfu_usb_get_reset(void)
> +{
> +	return !!(last_int_usb & MUSB_INTR_RESET);

The !! is not needed.

[...]

Best regards,
Marek Vasut