[PATCH] net:fec: fixed unaligned access and stack corruption

[Sascha Hauer]

On Tue, Jul 07, 2020 at 06:01:24PM +0200, Enrico Scholz wrote:
> on 64 bit architectures, the 'enum fec_type' might not be aligned and
> large enough to hold a pointer.  When running barebox without MMU,
> this will crash like
> 
> | i.MX8MM unique ID: dab4b7491a2c4209
> | DABT (current EL) exception (ESR 0x96000061) at 0x00000000fffefeb4
> | elr: 00000000ffe14c28 lr : 00000000ffe196e0
> | x0 : 0000000000000002 x1 : 00000000fffefeb4
> | x2 : 00000000ffe91370 x3 : 00000000bfe1b6e8
> | x4 : 0000000000000000 x5 : 0000000011000000
> | ...
> | Call trace:
> | [<ffe14c28>] (dev_get_drvdata+0xc/0x30) from [<ffe1446c>] (device_probe+0x54/0xd0)
> | [<ffe1446c>] (device_probe+0x54/0xd0) from [<ffe14530>] (match+0x48/0x58)
> | [<ffe14530>] (match+0x48/0x58) from [<ffe14a64>] (register_driver+0xc0/0xd0)
> | [<ffe14a64>] (register_driver+0xc0/0xd0) from [<ffe01738>] (start_barebox+0x64/0x90)
> 
> Signed-off-by: Enrico Scholz <enrico.scholz at sigma-chemnitz.de>
> ---
>  drivers/net/fec_imx.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

Until Ahmads suggestion is in place I applied this as a stop gap
solution.

Sascha

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