Messages in this thread | | | Date | Wed, 7 Mar 2007 20:09:10 +0800 | From | "Conke Hu" <> | Subject | [BUG] ATAPI command TEST_UNIT_READY never succeeds! |
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Hi, Do you ever noticed that the ATAPI command TEST_UNIT_READY always fails to execute !? I debugged in the following environments: piix + Intel ICH6/ICH7 PATA atiixp + ATI SB600 PATA libata + ata_piix + Intel ICH6/ICH7 PATA libata + sata_sil24 + Silicon Image 3132 libata + ahci + ATI SB600 SATA libata + ahci + Intel AHCI but none of them can execute TEST_UNIT_READY command successfully. For example, in ahci driver, ahci_interrupt() reads port status as 0x4000_0000, which indicates an taskfile error.
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