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authorEvgeniy Polyakov <johnpol@2ka.mipt.ru>2005-06-30 22:52:38 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2005-07-12 01:10:37 +0400
commit0e65f82814e9828d3ff54988de9e7c0b36794daa (patch)
treea4d5dfb9ab550160a453c6266fe67d18ace76857 /drivers/w1/w1.c
parent80efa8c72006a1c04004f8fb07b22073348e4bf2 (diff)
downloadlinux-0e65f82814e9828d3ff54988de9e7c0b36794daa.tar.xz
[PATCH] w1: fix CRC calculation on bigendian platforms.
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>
Diffstat (limited to 'drivers/w1/w1.c')
-rw-r--r--drivers/w1/w1.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 312cf3220f12..8a9c42822502 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -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);
}