strange result of 'atacontrol cap adX'

Hello,

I've noticed on a couple of days old RELENG_6 that when I issue
'atacontrol cap ad4' there is a message 'ata0-master: pio=PIO4
wdma=WDMA2 udma=UDMA133 cable=40 wire' printed to the console. I think
that there shouldn't happen anything on ata0 channel when I query ata2
channel. It is probably completely harmless but what does it mean?

This is a part of verbose dmesg on the machine with ATA attachments:

atapci0: <Intel ICH5 UDMA100 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 31.1 on pci0
atapci0: Reserved 0x10 bytes for rid 0x20 type 4 at 0xf000
ata0: <ATA channel 0> on atapci0
atapci0: Reserved 0x8 bytes for rid 0x10 type 4 at 0x1f0
atapci0: Reserved 0x1 bytes for rid 0x14 type 4 at 0x3f6
ata0: reset tp1 mask=03 ostat0=00 ostat1=00
ata0: stat0=0x01 err=0x01 lsb=0x01 msb=0x01
ata0: stat1=0x01 err=0x01 lsb=0x01 msb=0x01
ata0: reset tp2 stat0=01 stat1=01 devices=0x0
ioapic0: routing intpin 14 (ISA IRQ 14) to vector 55
ata0: [MPSAFE]
ata1: <ATA channel 1> on atapci0
atapci0: Reserved 0x8 bytes for rid 0x18 type 4 at 0x170
atapci0: Reserved 0x1 bytes for rid 0x1c type 4 at 0x376
ata1: reset tp1 mask=03 ostat0=00 ostat1=00
ata1: stat0=0x01 err=0x01 lsb=0x01 msb=0x01
ata1: stat1=0x01 err=0x01 lsb=0x01 msb=0x01
ata1: reset tp2 stat0=01 stat1=01 devices=0x0
ioapic0: routing intpin 15 (ISA IRQ 15) to vector 56
ata1: [MPSAFE]
atapci1: <Intel ICH5 SATA150 controller> port
0xc000-0xc007,0xc400-0xc403,0xc800-0xc807,0xcc00-0xcc03,0xd000-0xd00f
irq 18 at device 31.2 on pci0
atapci1: Reserved 0x10 bytes for rid 0x20 type 4 at 0xd000
atapci1: [MPSAFE]
ata2: <ATA channel 0> on atapci1
atapci1: Reserved 0x8 bytes for rid 0x10 type 4 at 0xc000
atapci1: Reserved 0x4 bytes for rid 0x14 type 4 at 0xc400
ata2: reset tp1 mask=01 ostat0=80 ostat1=00
ata2: stat0=0x80 err=0xff lsb=0xff msb=0xff
ata2: stat0=0x80 err=0xff lsb=0xff msb=0xff
ata2: stat0=0x50 err=0x01 lsb=0x00 msb=0x00
ata2: reset tp2 stat0=50 stat1=00 devices=0x1<ATA_MASTER>
ata2: [MPSAFE]
ata3: <ATA channel 1> on atapci1
atapci1: Reserved 0x8 bytes for rid 0x18 type 4 at 0xc800
atapci1: Reserved 0x4 bytes for rid 0x1c type 4 at 0xcc00
ata3: reset tp1 mask=01 ostat0=80 ostat1=00
ata3: stat0=0x80 err=0xff lsb=0xff msb=0xff
ata3: stat0=0x80 err=0xff lsb=0xff msb=0xff
ata3: stat0=0x50 err=0x01 lsb=0x00 msb=0x00
ata3: reset tp2 stat0=50 stat1=00 devices=0x1<ATA_MASTER>
ata3: [MPSAFE]

Thank you for any insight and hope it's not a sign of a problem.

Regards

Michal Mertl