Bug in ks8851.c

[Max . Nekludov]

----- Forwarded by Max Nekludov/USE/Elster on 28.03.2013 22:29 -----
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  |Max Nekludov/USE/Elster                                                                                                                           |
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  |torvalds@xxxxxxxx                                                                                                                                 |
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  |linux-kernel@xxxxxxxxxxxxxxx, trivial@xxxxxxxxxxxxxxx                                                                                             |
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  |28.03.2013 22:25                                                                                                                                  |
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  |Bug in ks8851.c                                                                                                                                   |
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According to the Datasheet (page 52):
15-12 Reserved
11-0 RXBC Receive Byte Count
This field indicates the present received frame byte size.

I suppose the code has a bug:
		rxh = ks8851_rdreg32(ks, KS_RXFHSR);
		rxstat = rxh & 0xffff;
		rxlen = rxh >> 16; // BUG!!! 0xFFF mask should be applied

P.S.
without bit mask applied I saw rxlen equal to 15360 which is bigger then
entire RX queue size (12KB).

Thanks,
Max Nekludov