linux-kernel - Re: [PATCH v2 11/15] wimax/i2400m: use new module_firmware

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Date:   Sat, 16 May 2020 00:11:25 -0400
From:   Rafael Aquini <aquini@...hat.com>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     jeyu@...nel.org, akpm@...ux-foundation.org, arnd@...db.de,
        rostedt@...dmis.org, mingo@...hat.com, cai@....pw,
        dyoung@...hat.com, bhe@...hat.com, peterz@...radead.org,
        tglx@...utronix.de, gpiccoli@...onical.com, pmladek@...e.com,
        tiwai@...e.de, schlad@...e.de, andriy.shevchenko@...ux.intel.com,
        keescook@...omium.org, daniel.vetter@...ll.ch, will@...nel.org,
        mchehab+samsung@...nel.org, kvalo@...eaurora.org,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-wimax@...el.com,
        Inaky Perez-Gonzalez <inaky.perez-gonzalez@...el.com>
Subject: Re: [PATCH v2 11/15] wimax/i2400m: use new module_firmware_crashed()

On Fri, May 15, 2020 at 09:28:42PM +0000, Luis Chamberlain wrote:
> This makes use of the new module_firmware_crashed() to help
> annotate when firmware for device drivers crash. When firmware
> crashes devices can sometimes become unresponsive, and recovery
> sometimes requires a driver unload / reload and in the worst cases
> a reboot.
> 
> Using a taint flag allows us to annotate when this happens clearly.
> 
> Cc: linux-wimax@...el.com
> Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@...el.com>
> Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
> ---
>  drivers/net/wimax/i2400m/rx.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/wimax/i2400m/rx.c b/drivers/net/wimax/i2400m/rx.c
> index c9fb619a9e01..307a62ca183f 100644
> --- a/drivers/net/wimax/i2400m/rx.c
> +++ b/drivers/net/wimax/i2400m/rx.c
> @@ -712,6 +712,7 @@ void __i2400m_roq_queue(struct i2400m *i2400m, struct i2400m_roq *roq,
>  	dev_err(dev, "SW BUG? failed to insert packet\n");
>  	dev_err(dev, "ERX: roq %p [ws %u] skb %p nsn %d sn %u\n",
>  		roq, roq->ws, skb, nsn, roq_data->sn);
> +	module_firmware_crashed();
>  	skb_queue_walk(&roq->queue, skb_itr) {
>  		roq_data_itr = (struct i2400m_roq_data *) &skb_itr->cb;
>  		nsn_itr = __i2400m_roq_nsn(roq, roq_data_itr->sn);
> -- 
> 2.26.2
> 
Acked-by: Rafael Aquini <aquini@...hat.com>