Hello! In i2c-2.8.0 i2c_check_addr() is broken - it always returns 0, therefore the duplicate address check is not done. i2cdetect does not ever report 'UU', and I have even seen a case when two chips are registered at the same address. This one-line patch fixes the problem: --- i2c-2.8.0/kernel/i2c-core.c.check-addr-fix 2003-06-28 22:19:12 +0400 +++ i2c-2.8.0/kernel/i2c-core.c 2003-07-22 20:49:39 +0400 @@ -315,7 +315,7 @@ rval = __i2c_check_addr(adapter, addr); up(&adapter->list); - return 0; + return rval; } int i2c_attach_client(struct i2c_client *client) -- Sergey Vlasov
