linux-kernel - Re: [PATCH 06/10] staging: r8188eu: clean up the usb

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Message-ID: <CAA=Fs0=PHibU5SbfvEyepdzgdbxpFtX0zCnS72JnyOSLBHPKCg@mail.gmail.com>
Date:   Sat, 21 Aug 2021 18:45:54 +0100
From:   Phillip Potter <phil@...lpotter.co.uk>
To:     Martin Kaiser <martin@...ser.cx>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Michael Straube <straube.linux@...il.com>,
        linux-staging@...ts.linux.dev,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/10] staging: r8188eu: clean up the usb_readXY functions

On Sat, 21 Aug 2021 at 17:49, Martin Kaiser <martin@...ser.cx> wrote:
>
> Remove unnecessary variables, summarize declarations and assignments.
>
> Signed-off-by: Martin Kaiser <martin@...ser.cx>
> ---
>  drivers/staging/r8188eu/hal/usb_ops_linux.c | 30 +++++----------------
>  1 file changed, 7 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> index dccb9fd34777..cb969a200681 100644
> --- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
> +++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> @@ -98,46 +98,30 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata,
>
>  static u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr)
>  {
> -       u16 wvalue;
> -       u16 len;
> -       u8 data = 0;
> -
> -
> -
> -       wvalue = (u16)(addr & 0x0000ffff);
> -       len = 1;
> -
> -       usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
> -
> +       u16 wvalue = (u16)(addr & 0x0000ffff);
> +       u8 data;
>
> +       usbctrl_vendorreq(pintfhdl, wvalue, &data, 1, REALTEK_USB_VENQT_READ);
>
>         return data;
> -
>  }
>
>  static u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr)
>  {
> -       u16 wvalue;
> -       u16 len;
> +       u16 wvalue = (u16)(addr & 0x0000ffff);
>         __le32 data;
>
> -       wvalue = (u16)(addr & 0x0000ffff);
> -       len = 2;
> -       usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
> +       usbctrl_vendorreq(pintfhdl, wvalue, &data, 2, REALTEK_USB_VENQT_READ);
>
>         return (u16)(le32_to_cpu(data) & 0xffff);
>  }
>
>  static u32 usb_read32(struct intf_hdl *pintfhdl, u32 addr)
>  {
> -       u16 wvalue;
> -       u16 len;
> +       u16 wvalue = (u16)(addr & 0x0000ffff);
>         __le32 data;
>
> -       wvalue = (u16)(addr & 0x0000ffff);
> -       len = 4;
> -
> -       usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
> +       usbctrl_vendorreq(pintfhdl, wvalue, &data, 4, REALTEK_USB_VENQT_READ);
>
>         return le32_to_cpu(data);
>  }
> --
> 2.20.1
>

Acked-by: Phillip Potter <phil@...lpotter.co.uk>

Regards,
Phil