linux/drivers/usb/core, branch v3.6.4

usb: Send Set SEL before enabling parent U1/U2 timeout.

2012-10-28T17:56:14Z

commit 65a95b75bc5afa7bbb844e222481044c1c4767eb upstream. The Set SEL control transfer tells a device the exit latencies associated with a device-initated U1 or U2 exit. Since a parent hub may initiate a transition to U1 soon after a downstream port's U1 timeout is set, we need to make sure the device receives the Set SEL transfer before the parent hub timeout is set. This patch should be backported to kernels as old as 3.5, that contain the commit 1ea7e0e8e3d0f50901d335ea4178ab2aa8c88201 "USB: Add support to enable/disable USB3 link states." Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman

USB: Enable LPM after a failed probe.

2012-10-28T17:56:14Z

commit d01f87c0ffa96cb44faa78710711eb6e974b891c upstream. Before a driver is probed, we want to disable USB 3.0 Link Power Management (LPM), in case the driver needs hub-initiated LPM disabled. After the probe finishes, we want to attempt to re-enable LPM, order to balance the LPM ref count. When a probe fails (such as when libusual doesn't want to bind to a USB 3.0 mass storage device), make sure to balance the LPM ref counts by re-enabling LPM. This patch should be backported to kernels as old as 3.5, that contain the commit 8306095fd2c1100e8244c09bf560f97aca5a311d "USB: Disable USB 3.0 LPM in critical sections." Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman

usb: Don't enable LPM if the exit latency is zero.

2012-10-28T17:56:14Z

commit ae8963adb4ad8c5f2a89ca1d99fb7bb721e7599f upstream. Some USB 3.0 devices signal that they don't implement Link PM by having all zeroes in the U1/U2 exit latencies in their SuperSpeed BOS descriptor. Don found that a Western Digital device he has experiences transfer errors when LPM is enabled. The lsusb shows the U1/U2 exit latencies are set to zero: Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 22 bNumDeviceCaps 2 SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x00 Latency Tolerance Messages (LTM) Supported wSpeedsSupported 0x000e Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 1 Lowest fully-functional device speed is Full Speed (12Mbps) bU1DevExitLat 0 micro seconds bU2DevExitLat 0 micro seconds The fix is to not enable LPM for a particular link state if we find its corresponding exit latency is zero. This patch should be backported to kernels as old as 3.5, that contain the commit 1ea7e0e8e3d0f50901d335ea4178ab2aa8c88201 "USB: Add support to enable/disable USB3 link states." Signed-off-by: Sarah Sharp Reported-by: Don Zickus Tested-by: Don Zickus Signed-off-by: Greg Kroah-Hartman

usbdevfs: Fix broken scatter-gather transfer

2012-10-28T17:56:09Z

commit 014639003c77a51fc319c9fdf225e7747cb6e18d upstream. The handling of large output bulk transfers is broken; the same user page is read over and over again. Fixed with this patch. Acked-by: Peter Stuge Acked-by: Hans de Goede Acked-by: Alan Stern Signed-off-by: Henrik Rydberg Signed-off-by: Greg Kroah-Hartman

USB: Fix race condition when removing host controllers

2012-09-27T16:17:49Z

This patch (as1607) fixes a race that can occur if a USB host controller is removed while a process is reading the /sys/kernel/debug/usb/devices file. The usb_device_read() routine uses the bus->root_hub pointer to determine whether or not the root hub is registered. The is not a valid test, because the pointer is set before the root hub gets registered and remains set even after the root hub is unregistered and deallocated. As a result, usb_device_read() or usb_device_dump() can access freed memory, causing an oops. The patch changes the test to use the hcd->rh_registered flag, which does get set and cleared at the appropriate times. It also makes sure to hold the usb_bus_list_lock mutex while setting the flag, so that usb_device_read() will become aware of new root hubs as soon as they are registered. Signed-off-by: Alan Stern Reported-by: Don Zickus Cc: stable Signed-off-by: Greg Kroah-Hartman

USB: add device quirk for Joss Optical touchboard

2012-09-05T23:56:58Z

This patch (as1604) adds a CONFIG_INTF_STRINGS quirk for the Joss infrared touchboard device. The device doesn't like to be asked for its interface strings. Signed-off-by: Alan Stern Reported-by: adam ? Cc: stable Signed-off-by: Greg Kroah-Hartman

Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

2012-08-01T02:07:42Z

Pull random subsystem patches from Ted Ts'o: "This patch series contains a major revamp of how we collect entropy from interrupts for /dev/random and /dev/urandom. The goal is to addresses weaknesses discussed in the paper "Mining your Ps and Qs: Detection of Widespread Weak Keys in Network Devices", by Nadia Heninger, Zakir Durumeric, Eric Wustrow, J. Alex Halderman, which will be published in the Proceedings of the 21st Usenix Security Symposium, August 2012. (See https://factorable.net for more information and an extended version of the paper.)" Fix up trivial conflicts due to nearby changes in drivers/{mfd/ab3100-core.c, usb/gadget/omap_udc.c} * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (33 commits) random: mix in architectural randomness in extract_buf() dmi: Feed DMI table to /dev/random driver random: Add comment to random_initialize() random: final removal of IRQF_SAMPLE_RANDOM um: remove IRQF_SAMPLE_RANDOM which is now a no-op sparc/ldc: remove IRQF_SAMPLE_RANDOM which is now a no-op [ARM] pxa: remove IRQF_SAMPLE_RANDOM which is now a no-op board-palmz71: remove IRQF_SAMPLE_RANDOM which is now a no-op isp1301_omap: remove IRQF_SAMPLE_RANDOM which is now a no-op pxa25x_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op omap_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op goku_udc: remove IRQF_SAMPLE_RANDOM which was commented out uartlite: remove IRQF_SAMPLE_RANDOM which is now a no-op drivers: hv: remove IRQF_SAMPLE_RANDOM which is now a no-op xen-blkfront: remove IRQF_SAMPLE_RANDOM which is now a no-op n2_crypto: remove IRQF_SAMPLE_RANDOM which is now a no-op pda_power: remove IRQF_SAMPLE_RANDOM which is now a no-op i2c-pmcmsp: remove IRQF_SAMPLE_RANDOM which is now a no-op input/serio/hp_sdc.c: remove IRQF_SAMPLE_RANDOM which is now a no-op mfd: remove IRQF_SAMPLE_RANDOM which is now a no-op ...

usb: Add USB_QUIRK_RESET_RESUME for all Logitech UVC webcams

2012-07-19T22:46:32Z

Most Logitech UVC webcams (both early models that don't advertise UVC compatibility and newer UVC-advertised devices) require the RESET_RESUME quirk. Instead of listing each and every model, match the devices based on the UVC interface information. Signed-off-by: Laurent Pinchart Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

usb: Add quirk detection based on interface information

2012-07-19T22:44:58Z

When a whole class of devices (possibly from a specific vendor, or across multiple vendors) require a quirk, explictly listing all devices in the class make the quirks table unnecessarily large. Fix this by allowing matching devices based on interface information. Signed-off-by: Laurent Pinchart Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: notify phy when root hub port connect change

2012-07-17T00:42:15Z

Phy may need to change settings when port connect change. Signed-off-by: Richard Zhao Tested-by: Subodh Nijsure Signed-off-by: Greg Kroah-Hartman