Hello, This is the second take of improve-ACPI-corner-case-handling patchset and contains the following ten patches. 0001-libata-acpi-adjust-constness-in-ata_acpi_gtm-stm.patch 0002-libata-update-ata_-_printk-macros-such-that-level.patch 0003-libata-add-more-opcodes-to-ata.h.patch 0004-libata-ata_dev_disable-should-be-called-from-EH-c.patch 0005-libata-acpi-add-new-hooks-ata_acpi_dissociate-and.patch 0006-libata-acpi-implement-and-use-ata_acpi_init_gtm.patch 0007-libata-acpi-implement-dev-gtf_cache-and-evaluate-_.patch 0008-libata-acpi-improve-ACPI-disabling.patch 0009-libata-acpi-improve-_GTF-execution-error-handling-a.patch 0010-libata-acpi-implement-_GTF-command-filtering.patch Changes from the last take [L] are... * @stm parameter is constified in 0001. * 0005 is added. This patch adds two ATA ACPI hooks for host dissociation and device disable. The former is used to restore initial _GTM setting on driver detach. The latter is used to implement _GTF caching in 0007. * 0006 updated such that init_gtm completely replaces all internal _GTM data usage and init_gtm is restored using _STM on driver detach. This change makes ignore-_GTM-failure-during-suspend patch unnecesary. * 0007 is added. This makes IDE _GTF evaluated right after _STM during resume. * 0008 is updated such that ACPI evaulation failure doesn't trigger ACPI disabling unless it causes other failures. * 0010 now also filters SET FEATURES - SET XFERMODE. SETXFER from _GTF only disrupts device configuration by putting the device in possibly inconsistent mode from the controller. The biggest change is that _GTM is now only performed on driver attach. The cached init_gtm value is used during resume. This, combined with moving _GTF evaluation right after _STM, solves all currently known _GTM, _STM and _GTF evaluation failures. By feeding the initial values configured by the BIOS, it can avoid problems of missing table entries or what not. This makes ACPI mode configuration for both controller and device meaningless but libata doesn't use them anyway. In fact, all they do is disrupting device configuration by feeding inconsistent mode to devices via _GTF taskfiles, which are filtered by 0010 now. Note that in many cases, _GTM/_STM implementations are very brittle and can't be used as generic dynamic configuration method. This patch fixes all known ATA ACPI related regressions including OSDL bugs 9320 and 9530. Thanks. -- tejun [L] http://thread.gmane.org/gmane.linux.ide/26334 - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
