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[PATCH] w1: fix CRC calculation on bigendian platforms.

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In the 2.6.13-rc1 code the "rn" structure is in the wrong-endianness
when passed to w1_attach_slave_device(). This causes problems like the
family and crc being swapped around.

Signed-off-by: Roger Blofeld <blofeldus@yahoo.com>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Evgeniy Polyakov 2005-06-30 22:52:38 +04:00 committed by Greg Kroah-Hartman
parent 80efa8c720
commit 0e65f82814
1 changed files with 2 additions and 3 deletions
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5
drivers/w1/w1.c
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@ -516,6 +516,7 @@ static void w1_slave_found(unsigned long data, u64 rn)
struct w1_reg_num *tmp;
int family_found = 0;
struct w1_master *dev;
u64 rn_le = cpu_to_le64(rn);
dev = w1_search_master(data);
if (!dev) {
@ -544,10 +545,8 @@ static void w1_slave_found(unsigned long data, u64 rn)
slave_count++;
}
rn = cpu_to_le64(rn);
if (slave_count == dev->slave_count &&
rn && ((le64_to_cpu(rn) >> 56) & 0xff) == w1_calc_crc8((u8 *)&rn, 7)) {
rn && ((rn >> 56) & 0xff) == w1_calc_crc8((u8 *)&rn_le, 7)) {
w1_attach_slave_device(dev, tmp);
}