Hi All, While browsing through current Linux Power management implementation wrt AHCI drivers, I stumbled upon following doubts. I assume whenever system wide suspend (STR/hibernate) occurs, all the process is freeze by the Kernel's PM subsystem and it ensures there are no additional command can be issued to AHCI driver. But it can be very much possible some commands are being executed within the AHCI driver. If my understanding is correct suspend() will be called anytime for the AHCI driver. In other words, the invocation ahci_pci_device_suspend() from PCI subsystem won't wait for ahci driver to complete its outstanding command. The invocation of suspend(), resume() & remove() call backs from PCI subsystem are not synchronized with that driver's IO path is this correct ? Does these outstanding command currently executed by driver will be lost ? Moreover in resume() routine of AHCI driver, the controller is reinitialized (ahci_init_controller), then how system can restart the commands that are stopped during previous suspend() call. Thanks Das -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
