Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 30 Aug 2022 11:28:02 +0100
From:   "Russell King (Oracle)" <linux@armlinux.org.uk>
To:     Zhen Lei <thunder.leizhen@huawei.com>
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        patches@armlinux.org.uk, Saravana Kannan <saravanak@google.com>,
        Kefeng Wang <wangkefeng.wang@huawei.com>,
        Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH v2] ARM: Add sanity check for dev->periphid in
 amba_probe()
Message-ID: <Yw3mMrx0oJjLGVN0@shell.armlinux.org.uk>
References: <20220830065413.638-1-thunder.leizhen@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20220830065413.638-1-thunder.leizhen@huawei.com>
Sender: Russell King (Oracle) <linux@armlinux.org.uk>
Precedence: bulk

On Tue, Aug 30, 2022 at 02:54:13PM +0800, Zhen Lei wrote:
> Commit f2d3b9a46e0e ("ARM: 9220/1: amba: Remove deferred device addition")
> forcibly invokes device_add() even if dev->periphid is not ready. Although
> it will be remedied in amba_match(): dev->periphid will be initialized
> if everything is in place; Otherwise, return -EPROBE_DEFER to block
> __driver_attach() from further execution. But not all drivers have .match
> hook, such as pl031, the dev->bus->probe will be called directly in
> __driver_attach(). Unfortunately, if dev->periphid is still not
> initialized, the following exception will be triggered.

Please check whether 9229/1 fixes this issue for you.

http://www.armlinux.org.uk/developer/patches/download.php?id=9229/1

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!