netdev - Re: [PATCH resend 1/3] Revert "net: fec: fix missing napi

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Message-ID: <20130427120619.GA26097@electric-eye.fr.zoreil.com>
Date:	Sat, 27 Apr 2013 14:06:19 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Frank Li <lznuaa@...il.com>
Cc:	Robert Schwebel <r.schwebel@...gutronix.de>,
	David Miller <davem@...emloft.net>,
	Lucas Stach <l.stach@...gutronix.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Frank.Li@...escale.com" <Frank.Li@...escale.com>,
	Fabio Estevam <festevam@...il.com>,
	Shawn Guo <shawn.guo@...aro.org>
Subject: Re: [PATCH resend 1/3] Revert "net: fec: fix missing napi_disable
 call"

Frank Li <lznuaa@...il.com> :
[...]
> diff --git a/drivers/net/ethernet/freescale/fec.c
> b/drivers/net/ethernet/freescale/fe
> index 73195f6..c945bb7 100644
> --- a/drivers/net/ethernet/freescale/fec.c
> +++ b/drivers/net/ethernet/freescale/fec.c
> @@ -403,6 +403,11 @@ fec_restart(struct net_device *ndev, int duplex)
>         const struct platform_device_id *id_entry =
>                                 platform_get_device_id(fep->pdev);
>         int i;
> +       if (netif_running(ndev)) {
> +               napi_disable(&fep->napi);

napi_disable may sleep.

fec_restart can be called with spinlock held in fec_enet_adjust_link

-- 
Ueimor
--
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