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w1: fix slave selection on big-endian systems
During test of the w1-gpio driver i found that in "w1.c:679 w1_slave_found()" the device id is converted to little-endian with "cpu_to_le64()", but its not converted back to cpu format in "w1_io.c:293 w1_reset_select_slave()". Based on a patch created by Andreas Hummel. [akpm@linux-foundation.org: remove unneeded cast] Reported-by: Andreas Hummel <andi_hummel@gmx.de> Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -356,7 +356,9 @@ int w1_reset_select_slave(struct w1_slave *sl)
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w1_write_8(sl->master, W1_SKIP_ROM);
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else {
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u8 match[9] = {W1_MATCH_ROM, };
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memcpy(&match[1], (u8 *)&sl->reg_num, 8);
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u64 rn = le64_to_cpu(*((u64*)&sl->reg_num));
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memcpy(&match[1], &rn, 8);
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w1_write_block(sl->master, match, 9);
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}
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return 0;
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