linux-kernel - Re: [PATCH v2 04/15] bnxt: use new module_firmware

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Date:   Sat, 16 May 2020 00:06:16 -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,
        Michael Chan <michael.chan@...adcom.com>
Subject: Re: [PATCH v2 04/15] bnxt: use new module_firmware_crashed()

On Fri, May 15, 2020 at 09:28:35PM +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: Michael Chan <michael.chan@...adcom.com>
> Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
> ---
>  drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> index dd0c3f227009..5ba1bd0734e9 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> @@ -3503,6 +3503,7 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
>  
>  	dump->flag = bp->dump_flag;
>  	if (dump->flag == BNXT_DUMP_CRASH) {
> +		module_firmware_crashed();
>  #ifdef CONFIG_TEE_BNXT_FW
>  		return tee_bnxt_copy_coredump(buf, 0, dump->len);
>  #endif
> -- 
> 2.26.2
> 
Acked-by: Rafael Aquini <aquini@...hat.com>