user/sven/linux.git/include/linux/usb.h, branch v3.10.65

USB: remove CONFIG_USB_SUSPEND option

2013-03-28T18:10:22Z

This patch (as1675) removes the CONFIG_USB_SUSPEND option, essentially replacing it everywhere with CONFIG_PM_RUNTIME (except for one place in hub.c, where it is replaced with CONFIG_PM because the code needs to be used in both runtime and system PM). The net result is code shrinkage and simplification. There's very little point in keeping CONFIG_USB_SUSPEND because almost everybody enables it. The few that don't will find that the usbcore module has gotten somewhat bigger and they will have to take active measures if they want to prevent hubs from being runtime suspended. Signed-off-by: Alan Stern CC: Peter Chen Signed-off-by: Greg Kroah-Hartman

USB: adds comment on suspend callback

2013-03-25T17:55:46Z

This patch adds comments on interface driver suspend callback to emphasize that the failure return value is ignored by USB core in system sleep context, so do not try to recover device for this case and let resume/reset_resume callback handle the suspend failure if needed. Also kerneldoc for usb_suspend_both() is updated with the fact. Acked-by: Alan Stern Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman

USB: fix trivial usb_device kernel-doc errors

2013-03-15T18:45:16Z

Fix trivial kernel-doc warnings: Warning(include/linux/usb.h:574): No description found for parameter 'usb3_lpm_enabled' Warning(include/linux/usb.h:574): Excess struct/union/enum/typedef member 'usb_classdev' description in 'usb_device' Warning(include/linux/usb.h:574): Excess struct/union/enum/typedef member 'usbfs_dentry' description in 'usb_device' Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: Jiri Kosina Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Greg Kroah-Hartman

USB: add usb_hcd_{start,end}_port_resume

2013-01-25T23:06:01Z

This patch (as1649) adds a mechanism for host controller drivers to inform usbcore when they have begun or ended resume signalling on a particular root-hub port. The core will then make sure that the root hub does not get runtime-suspended while the port resume is going on. Since commit 596d789a211d134dc5f94d1e5957248c204ef850 (USB: set hub's default autosuspend delay as 0), the system tries to suspend hubs whenever they aren't in use. While a root-hub port is being resumed, the root hub does not appear to be in use. Attempted runtime suspends fail because of the ongoing port resume, but the PM core just keeps on trying over and over again. We want to prevent this wasteful effort. Signed-off-by: Alan Stern Tested-by: Ming Lei Signed-off-by: Greg Kroah-Hartman

USB: add USB_DEVICE_INTERFACE_CLASS macro

2012-10-31T19:58:11Z

Matching on device and interface class with with unspecified subclass and protocol is sometimes useful. This is slightly different from USB_DEVICE_AND_INTERFACE_INFO which requires the full interface class/subclass/protocol triplet. Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman

USB: speed up usb_bus_resume()

2012-10-24T21:51:22Z

This patch (as1620) speeds up USB root-hub resumes in the common case where every enabled port has its suspend feature set (which currently will be true for every runtime resume of the root hub). If all the enabled ports are suspended then resuming the root hub won't resume any of the downstream devices. In this case there's no need for a Resume Recovery delay, because that delay is meant to give devices a chance to get ready for active use. To keep track of the port suspend features, the patch adds a "port_is_suspended" flag to struct usb_device. This has to be tracked separately from the device's state; it's entirely possible for a USB-2 device to be suspended while the suspend feature on its parent port is clear. The reason is that devices will go into suspend whenever their parent hub does. Signed-off-by: Alan Stern Reviewed-by: Peter Chen Tested-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

USB: hub_for_each_child should skip unconnected ports

2012-10-24T21:51:21Z

This patch (as1619) improves the interface to the "hub_for_each_child" macro. The name clearly suggests that the macro iterates over child devices; it does not suggest that the loop will also iterate over unnconnected ports. The patch changes the macro so that it will skip over unconnected ports and iterate only the actual child devices. The two existing call sites are updated to avoid testing for a NULL child pointer, which is now unnecessary. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: update documentation for URB_ISO_ASAP

2012-10-22T18:10:24Z

This patch (as1611) updates the USB documentation and kerneldoc to give a more precise meaning for the URB_ISO_ASAP flag and to explain more of the details of scheduling for isochronous URBs. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: usb.h: remove dbg() macro

2012-10-17T18:16:13Z

There are no users of this macro anymore in the kernel tree, so finally delete it. Signed-off-by: Greg Kroah-Hartman

usb/acpi: Use ACPI methods to power off ports.

2012-09-10T20:04:01Z

Upcoming Intel systems will have an ACPI method to control whether a USB port can be completely powered off. The implication of powering off a USB port is that the device and host sees a physical disconnect, and subsequent port connections and remote wakeups will be lost. Add a new function, usb_acpi_power_manageable(), that can be used to find whether the usb port has ACPI power resources that can be used to power on and off the port on these machines. Also add a new function called usb_acpi_set_power_state() that controls the port power via these ACPI methods. When the USB core calls into the xHCI hub driver to power off a port, check whether the port can be completely powered off via this new ACPI mechanism. If so, call into these new ACPI methods. Also use the ACPI methods when the USB core asks to power on a port. Signed-off-by: Lan Tianyu Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman