This is additional information.
I defined ATA_DEBUG and ATA_VERBOSE_DEBUG macros,
then I got the following message when I insert a Compact Flash card.
~ $ [ 13.223837] pccard: PCMCIA card inserted into slot 0
[ 13.225887] cs: memory probe 0x000000-0x0fffff: excluding 0x000-0xfffff
[ 13.231967] cs: memory probe 0xfd000000-0xfd0fffff: excluding
0xfd000000-0xfd00ffff 0xfd020000-0xfd03ffff
[ 13.249995] pcmcia: registering new device pcmcia0.0
[ 13.293246] ata_host_alloc: ENTER
[ 13.293639] ata_port_alloc: ENTER
[ 13.295883] __ata_port_freeze: ata4294967295 port frozen
[ 13.300038] scsi1 : pata_pcmcia
[ 13.304416] ata1: PATA max PIO0 cmd 0xfe200200 ctl 0xfe20020e irq 67
[ 13.307821] ata_host_register: probe begin
[ 13.311823] ata_port_schedule_eh: port EH scheduled
[ 13.315819] ata_scsi_error: ENTER
[ 13.319805] ata_port_flush_task: ENTER
[ 13.323540] ata_eh_link_autopsy: ENTER
[ 13.323821] ata_eh_recover: ENTER
[ 13.327838] __ata_port_freeze: ata1 port frozen
[ 13.331819] ata_std_softreset: ENTER
[ 13.335827] ata_std_softreset: about to softreset, devmask=0
[ 13.339812] ata_bus_softreset: ata1: bus reset via SRST
[ 13.499834] ata_std_softreset: EXIT, classes[0]=9 [1]=9
[ 13.502125] ata_std_postreset: ENTER
[ 13.503802] ata_std_postreset: EXIT, no device
[ 13.507819] ata_eh_thaw_port: ata1 port thawed
[ 13.511800] ata_eh_revalidate_and_attach: ENTER
[ 13.515807] ata_eh_recover: EXIT, rc=0
[ 13.519815] ata_scsi_error: EXIT
[ 13.523825] ata_host_register: host probe begin
[ 13.527821] ata_scsi_error: ENTER
[ 13.531801] ata_port_flush_task: ENTER
[ 13.535830] ata_eh_link_autopsy: ENTER
[ 13.539813] ata_eh_recover: ENTER
[ 13.543817] ata_eh_revalidate_and_attach: ENTER
[ 13.547805] ata_eh_recover: EXIT, rc=0
[ 13.551809] ata_port_schedule_eh: port EH scheduled
[ 13.555976] ata_scsi_error: EXIT
~ $
Regards,
Jeongdo Son