From: Sascha Hauer <s.hauer@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>,
barebox@lists.infradead.org
Subject: Re: [PATCH] net:fec: fixed unaligned access and stack corruption
Date: Sat, 11 Jul 2020 07:07:19 +0200 [thread overview]
Message-ID: <20200711050719.GP15485@pengutronix.de> (raw)
In-Reply-To: <9c7cf1e5-baf1-65b0-ddef-e651f6f21e2d@pengutronix.de>
On Tue, Jul 07, 2020 at 07:11:31PM +0200, Ahmad Fatoum wrote:
> On 7/7/20 6:01 PM, Enrico Scholz wrote:
> > on 64 bit architectures, the 'enum fec_type' might not be aligned and
> > large enough to hold a pointer.
>
> I am wondering if we couldn't just adopt the Linux prototype:
> void *dev_get_drvdata(const struct device_d *dev);
>
> and do away with the error code and most of the casts.
> Users won't be able to differentiate between NULL from id table
> and NULL due to lack of drvdata, but I don't think this is
> that much of a downside, compared with not having casts obscure
> the more common pitfall (besides fec_imx.c, lm75.c, apbh_dma.c and nand_mxs.c
> are affected as well of which probably only the first is an issue.)
Sounds good. When we change this we should rename the function
alongside, because dev_get_drvdata() does something different in Linux.
Sascha
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next prev parent reply other threads:[~2020-07-11 5:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-07 16:01 Enrico Scholz
2020-07-07 17:11 ` Ahmad Fatoum
2020-07-11 5:07 ` Sascha Hauer [this message]
2020-07-11 5:13 ` Ahmad Fatoum
2020-07-11 5:20 ` Sascha Hauer
2020-07-11 5:28 ` Ahmad Fatoum
2020-07-14 18:39 ` Sascha Hauer
2020-07-30 21:13 ` Marco Felsch
2020-07-30 21:23 ` Ahmad Fatoum
2020-07-30 21:33 ` Marco Felsch
2020-07-11 5:12 ` Sascha Hauer
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