df5521-wire: READ req_len=255  <== bridge *count
df5521-wire: READ gave 255 bytes: 08 a0 a1 a2 ...
df5521-wire: STOP
df5521-wire: START slave=0x5a WRITE
df5521-wire: WRITE len=1 bytes: 07
df5521-wire: REPEATED_START slave=0x5b READ
df5521-wire: READ req_len=255  <== bridge *count
df5521-wire: READ gave 255 bytes: 08 a0 a1 a2 ...
df5521-wire: STOP
df5521-wire: START slave=0x5a WRITE
df5521-wire: WRITE len=1 bytes: 07
df5521-wire: REPEATED_START slave=0x5b READ
df5521-wire: READ req_len=255  <== bridge *count
smb0: detached
smbus0: detached
iicsmb0: detached
df5521-wire: READ gave 255 bytes: 08 a0 a1 a2 ...


Fatal trap 12: page fault while in kernel mode
cpuid = 4; lapic id = 4
fault virtual address	= 0xffffffff8261f0bf
fault code		= supervisor read instruction, page not present
instruction pointer	= 0x8:0xffffffff8261f0bf
stack pointer	        = 0x10:0xfffff80117d51278
frame pointer	        = 0x10:0xfffff80117d512c8
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 989
current thread          = pri 10 
kernel: type 12 trap, code=10

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      iicbus_devclass+0x1e3e7:

Fatal trap 12: page fault while in kernel mode
cpuid = 4; lapic id = 4
fault virtual address	= 0xffffffff8261f0bf