[BUG] ATAPI command TEST_UNIT_READY never succeeds!

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From: Conke Hu <conke.hu@...>

To: Jeff Garzik <jeff@...>, Alan <alan@...>, Tejun Heo <htejun@...>, Linux Kernel Mailing List <linux-kernel@...>

Subject: [BUG] ATAPI command TEST_UNIT_READY never succeeds!

Date: Wednesday, March 7, 2007 - 8:09 am

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.


Conke
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Messages in current thread:

[BUG] ATAPI command TEST_UNIT_READY never succeeds!, Conke Hu, (Wed Mar 7, 8:09 am)

Re: [BUG] ATAPI command TEST_UNIT_READY never succeeds!, Conke Hu, (Wed Mar 7, 8:23 am)

Re: [BUG] ATAPI command TEST_UNIT_READY never succeeds!, Tejun Heo, (Wed Mar 7, 8:27 am)

Re: [BUG] ATAPI command TEST_UNIT_READY never succeeds!, Conke Hu, (Fri Mar 9, 8:21 am)

Re: [BUG] ATAPI command TEST_UNIT_READY never succeeds!, Tejun Heo, (Fri Mar 9, 8:59 am)

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