On 2013年01月11日 20:10, Lan Tianyu wrote: > Change since v1: > optimize the export connect type patch and adjust the DeviceRemovalbe flag > in the rh_call_control() after GetHubDescriptor request being processed. > move all debounce operation to usb port's runtime resume callback(). Add > did_runtime_put in the struct usb_port to call pm_runtime_get/put(portdev) paired. > using pm_runtime_get/put(portdev) to allow or prohibit device to be power > off inside of pm qos request in the kernel side. > > Change since v2: > Correct some link breaks. > Add did_runtime_put in the usb_disconnect() before calling pm_runtime_put(portdev). > Provide two seperate functions usb_device_allow_power_off() and usb_device_prevent_power_off() > instead of just one. > > Change since v3: > Set did_runtime_put to false in usb_disconnect() when its value is true > Add comment about "not enable port runtime pm if fail to expose port's pm qos." and call > pm_runtime_set_active(portdev) unconditionally. > rename "usb_device_allow_prevent_power_off" with "usb_device_control_power_off" > Modify "be power off" to "be powered off" > Expose dev_pm_qos_flags() symbol in order to ensure usb core can compile as module. > > Resend v4: > make patch "PM/Qos: Expose dev_pm_qos_flags symbol" as first patch to avoid compilation > error during "git bisect" > correct some comments. > > This Patchset is based on usb-next tree commit 102ee001912 "Merge tag 'for-usb-next-2013-01-03'" > > This patchset is to add usb port power off mechanism and > merge with patchset "usb: expose DeviceRemovable to user space via sysfs attribute". > > Patchset "usb: expose DeviceRemovable to user space via sysfs attribute". > http://marc.info/?l=linux-usb&m=135279430410171&w=2 with some link break corrects > > The main discussion about usb port power off mechanism is in the following link: > http://marc.info/?l=linux-usb&m=134818340017208&w=2 > > > PM/Qos: Expose dev_pm_qos_flags symbol > usb: Add driver/usb/core/(port.c,hub.h) files > USB: Set usb port's DeviceRemovable according acpi information > usb: Add "portX/connect_type" attribute to expose usb port's connect type > usb: Create link files between child device and usb port device. > usb: Register usb port's acpi power resources > usb: add runtime pm support for usb port device > usb: add usb port auto power off mechanism > usb: expose usb port's pm qos flags to user space > usb: add usb_device_allow_power_off() and usb_device_prevent_power_off() function. > Hi Greg&Alan: Do you have some more comments about this patchset? Thanks. > -- Best regards Tianyu Lan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
