linux-kernel - Re: [PATCH v4 17/18] staging: r8188eu: Shorten calls chain of rtw

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Date:   Tue, 14 Sep 2021 16:01:12 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>,
        Pavel Skripkin <paskripkin@...il.com>
Subject: Re: [PATCH v4 17/18] staging: r8188eu: Shorten calls chain of
 rtw_read8/16/32()

On Tue, Sep 14, 2021 at 02:55:45PM +0200, Fabio M. De Francesco wrote:
> On Tuesday, September 14, 2021 11:32:58 AM CEST Dan Carpenter wrote:
> > On Mon, Sep 13, 2021 at 08:10:01PM +0200, Fabio M. De Francesco wrote:
> > > +	if (status == (-ESHUTDOWN || -ENODEV || -ENOENT)) {
> > 
> > 	if (status == -ESHUTDOWN ||
> > 	    status == -ENODEV ||
> > 	    status == -ENOENT) {
> 
> This is a stupid mistake and Pavel soon noticed it. Yesterday I sent a 
> message to ask reviewers for disregarding v4 and wait for v5 with the fix of 
> this test. :(

There wasn't enough information in the email to know what issue you had
seen.  I had already started reviewing it when I saw the email.

> 
> However, I noticed that usb_control_msg_recv() might return in "status" some 
> recoverable errors (like -ENOMEM and others); so I guess that the code must 
> retry in a while loop (exactly as it did with usb_control_msg() in 
> usbctrl_vendorreq()). 

I would not add a while loop unless testing shows it is required.

regards,
dan carpenter