Messages in this thread | | | Date | Wed, 26 Feb 2003 10:21:39 -0500 | From | Jeff Garzik <> | Subject | Re: [PATCH] fixed pcnet32 multicast listen on big endian |
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Geert Uytterhoeven wrote: > On Sun, 23 Feb 2003, Geert Uytterhoeven wrote: > >>On Wed, 5 Feb 2003, Marcus Meissner wrote: >> >>>This fixes multicast listen for pcnet32 on at least powerpc and powerpc64 >>>kernels. >>> >>>The mcast_table is in memory referenced by the card and so it needs >>>to be accessed in little endian mode. >>> >>>Ciao, Marcus >>> >>>--- linux-2.4.19/drivers/net/pcnet32.c.be 2003-02-05 07:59:27.000000000 +0100 >>>+++ linux-2.4.19/drivers/net/pcnet32.c 2003-02-05 08:00:22.000000000 +0100 >>>@@ -1534,7 +1534,9 @@ >>> >>> crc = ether_crc_le(6, addrs); >>> crc = crc >> 26; >>>- mcast_table [crc >> 4] |= 1 << (crc & 0xf); >>>+ mcast_table [crc >> 4] = le16_to_cpu( >> >> ^^^^^^^^^^^ >> >>>+ le16_to_cpu(mcast_table [crc >> 4]) | (1 << (crc & 0xf)) >>>+ ); >> >>Shouldn't the first conversion be `cpu_to_le16'? > > > Ugh, a quick grep shows that this driver _always_ uses `le*_to_cpu()' to > convert from CPU to little endian.
Cosmetically you are correct, and I prefer it to be changed eventually.
However programatically, it has no effect, because those cpu_to_foo and foo_to_cpu functions either swap, or they don't. Direction doesn't matter terribly much :)
Jeff
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