From: David Miller <davem@davemloft.net>
To: claudiu.manoil@freescale.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net-next 2/6] gianfar: Replace sysfs stubs with module params (fix)
Date: Sun, 16 Feb 2014 23:48:43 -0500 (EST) [thread overview]
Message-ID: <20140216.234843.10302057405564080.davem@davemloft.net> (raw)
In-Reply-To: <1392379445-28358-3-git-send-email-claudiu.manoil@freescale.com>
From: Claudiu Manoil <claudiu.manoil@freescale.com>
Date: Fri, 14 Feb 2014 14:04:01 +0200
> Removing the sysfs stubs for the Tx FIFOCFG and ATTRELI
> (stashing) config registers, as these registers may only
> be configured after a MAC reset, with the controller stopped
> (i.e. during hw init, at probe() time). The current sysfs
> stubs allow on-the-fly updates of these registers (the locking
> measures are useless and only add unecessary code).
>
> Changing these registers on-the-fly is strogly discouraged.
> In this regard, this patch may be seen as a security fix.
>
> To address this issue and not lose entirely these config
> params, they are now accessible as driver module parameters,
> and their names and default values have been preserved.
>
> Moreover, the stasing configuration options were effectively
> disabled (didn't get to the hw anyway if changed) because
> the stashing device_flags (HAS_BD_STASHING|HAS_BUF_STASHING)
> were "accidentally" cleared during probe(). The patch fixes
> this bug as well.
>
> Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Sorry, no new module parameters.
And as you state these never actually reached the hardware so they
_never worked_. Please just remove them.
next prev parent reply other threads:[~2014-02-17 4:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 12:03 [PATCH net-next 0/6] gianfar: Device configuration fixes Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 1/6] gianfar: Cleanup/Fix gfar_probe and the hw init code Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 2/6] gianfar: Replace sysfs stubs with module params (fix) Claudiu Manoil
2014-02-17 4:48 ` David Miller [this message]
2014-02-17 10:20 ` Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 3/6] gianfar: Remove useless HAS_PADDING device flag Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 4/6] gianfar: Factor out enabling/disabling of hw interrupts Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 5/6] gianfar: Add missing graceful reset steps and fixes Claudiu Manoil
2014-02-14 12:04 ` [PATCH net-next 6/6] gianfar: Remove clean_rx_ring race from gfar_ethtool Claudiu Manoil
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