Hello, This is This is part of patchset series described in [T]. This is the third take of prep-for-hotplug-support patchset. Changes from the last take[L] are * sata_phy_debounce() now takes const array of three ulongs for timing parameters. This makes it easy to define and export different predefined timing parameters and to pass timing parameter through other functions. sata_phy_resume() is changed to take timing parameters and pass it to sata_phy_debounce() intead of crude boolean @quick. * Three predefined parameters are provided - sata_deb_timing_boot, sata_deb_timing_eh and sata_deb_timing_before_fsrst. These predefined parameters are used in the new hotplug framework and don't have to be long enough to cover all the cases. The goal is to cover most cases in reasonable amount of time. If timeout occurs, libata will give it more time and then retry. * prereset() framework has been updated such that prereset() can tell EH what reset mechanism to use or to skip reset completely. This way, HRST_TO_RESUME handling is confined into prereset() and device detection from prereset() is handled cleanly. * ata_std_prereset() has been updated to handle different behaviors controllers show on hotplug. Some controllers can wait for the first FIS34, some can only after COMRESET, others just can't. These are controlled by two flags - ATA_FLAG_HRST_TO_RESUME and ATA_FLAG_CANT_WAIT_FIS34. Note that those two flags describe PHY property. They will move out to ata_link later. If necessary, ata_std_prereset() waits for spinup until hotplug event timestamp + spinup wait time (currently 8s). This mechanism will allow later PMP support to avoid excessive amount of waiting. This patchset is against upstream (8d4ee71ff6de5255ebfdf44fb83419d27bd06368) + enforce-default-EH-actions patch [1] + scsi_implement_eh-patch [2] Thanks. -- tejun [T] http://article.gmane.org/gmane.linux.ide/10530 [L] http://article.gmane.org/gmane.linux.ide/10073 [1] http://article.gmane.org/gmane.linux.ide/10317 [2] http://article.gmane.org/gmane.linux.ide/10529 - : 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
