linux-kernel - Re: [PATCH v4 00/18] staging: r8188eu: Shorten and simplify calls chain

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Date:   Mon, 13 Sep 2021 22:35:22 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Pavel Skripkin <paskripkin@...il.com>
Cc:     linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: Re: [PATCH v4 00/18] staging: r8188eu: Shorten and simplify calls chain

On Monday, September 13, 2021 8:09:44 PM CEST Fabio M. De Francesco wrote:
> io_ops abstraction is useless in this driver, since there is only one ops
> registration. Without io_ops we can get rid of indirect calls mess and
> shorten the calls chain.
> 
> Shorten the calls chain of rtw_read8/16/32() down to the actual reads.
> For this purpose unify the three usb_read8/16/32 into the new
> usb_read(); make the latter parameterizable with 'size'; embed most of
> the code of usbctrl_vendorreq() into usb_read() and use in it the new
> usb_control_msg_recv() API of USB Core.
> 
> Shorten the calls chain of rtw_write8/16/32() down to the actual writes.
> For this purpose unify the four usb_write8/16/32/N() into the new
> usb_write(); make the latter parameterizable with 'size'; embed most of
> the code of usbctrl_vendorreq() into usb_write() and use in it the new
> usb_control_msg_send() API of USB Core.
> 
> The code with the modifications was thoroughly tested by Pavel Skripkin
> using a TP-Link TL-WN722N v2 / v3 [Realtek RTL8188EUS] and by Fabio M.
> De Francesco using a ASUSTek Computer, Inc. Realtek 8188EUS [USB-N10 Nano].

Hi all,

Please disregard this series. I've made a mistake, so tomorrow I'll send v5.

Pavel Skripkin made me notice a logical error where the code checks errors in 
17/18 and 18/18. So, two lines must be rewritten.

Thanks,

Fabio