linux-kernel - Re: [PATCH][next] wifi: rtl8xxxu: Avoid -Wflex-array-member-not-at-end warnings

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Message-ID: <884145e57dc640d3bed29922d352f658@realtek.com>
Date: Fri, 21 Nov 2025 11:12:40 +0000
From: Ping-Ke Shih <pkshih@...ltek.com>
To: "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Zenm Chen
	<zenmchen@...il.com>,
        "gustavoars@...nel.org" <gustavoars@...nel.org>
CC: "Jes.Sorensen@...il.com" <Jes.Sorensen@...il.com>,
        "linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "rtl8821cerfe2@...il.com" <rtl8821cerfe2@...il.com>
Subject: Re: [PATCH][next] wifi: rtl8xxxu: Avoid
 -Wflex-array-member-not-at-end warnings


Gustavo A. R. Silva <gustavo@...eddedor.com> wrote:
> On 11/21/25 19:06, Zenm Chen wrote:
> > Dear maintainers,
> >
> > With this patch applied, my system always freezes right after the rtl8xxxu
> > driver is loaded. is it normal?
> 
> I don't think so... It probably means that struct urb urb; cannot really be
> moved to the end of struct rtl8xxxu_rx_urb or struct rtl8xxxu_tx_urb?
> 
> It'd be great if you could share a log.
> 
> Thanks for the report!
> -Gustavo
> 
> >
> > OS: Arch Linux
> > kernel: 6.17.8-arch1-1
> > test devices: RTL8192{CU,EU,FU}
> >

As my review, 'struct urb urb;' seems only a member data.
No order problem.

To have enough time to dig the problem, I'd drop this patch
from my pull-request for now.