linux/drivers/usb/host, branch v3.16

usb: Kconfig: make EHCI_MSM selectable for QCOM SOCs

2014-07-01T05:47:18Z

This patch makes the msm ehci driver available to use on QCOM SOCs, which have the same IP. Signed-off-by: Srinivas Kandagatla Acked-by: Felipe Balbi Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

xhci: Fix runtime suspended xhci from blocking system suspend.

2014-06-24T16:29:35Z

The system suspend flow as following: 1, Freeze all user processes and kenrel threads. 2, Try to suspend all devices. 2.1, If pci device is in RPM suspended state, then pci driver will try to resume it to RPM active state in the prepare stage. 2.2, xhci_resume function calls usb_hcd_resume_root_hub to queue two workqueue items to resume usb2&usb3 roothub devices. 2.3, Call suspend callbacks of devices. 2.3.1, All suspend callbacks of all hcd's children, including roothub devices are called. 2.3.2, Finally, hcd_pci_suspend callback is called. Due to workqueue threads were already frozen in step 1, the workqueue items can't be scheduled, and the roothub devices can't be resumed in this flow. The HCD_FLAG_WAKEUP_PENDING flag which is set in usb_hcd_resume_root_hub won't be cleared. Finally, hcd_pci_suspend will return -EBUSY, and system suspend fails. The reason why this issue doesn't show up very often is due to that choose_wakeup will be called in step 2.3.1. In step 2.3.1, if udev->do_remote_wakeup is not equal to device_may_wakeup(&udev->dev), then udev will resume to RPM active for changing the wakeup settings. This has been a lucky hit which hides this issue. For some special xHCI controllers which have no USB2 port, then roothub will not match hub driver due to probe failed. Then its do_remote_wakeup will be set to zero, and we won't be as lucky. xhci driver doesn't need to resume roothub devices everytime like in the above case. It's only needed when there are pending event TRBs. This patch should be back-ported to kernels as old as 3.2, that contains the commit f69e3120df82391a0ee8118e0a156239a06b2afb "USB: XHCI: resume root hubs when the controller resumes" Cc: stable@vger.kernel.org # 3.2 Signed-off-by: Wang, Yu Acked-by: Alan Stern [use readl() instead of removed xhci_readl(), reword commit message -Mathias] Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman

xhci: clear root port wake on bits if controller isn't wake-up capable

2014-06-24T16:29:35Z

When xHCI PCI host is suspended, if do_wakeup is false in xhci_pci_suspend, xhci_bus_suspend needs to clear all root port wake on bits. Otherwise some Intel platforms may get a spurious wakeup, even if PCI PME# is disabled. This patch should be back-ported to kernels as old as 2.6.37, that contains the commit 9777e3ce907d4cb5a513902a87ecd03b52499569 "USB: xHCI: bus power management implementation". Cc: stable@vger.kernel.org # 2.6.37 Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman

xhci: correct burst count field for isoc transfers on 1.0 xhci hosts

2014-06-24T16:29:35Z

The transfer burst count (TBC) field in xhci 1.0 hosts should be set to the number of bursts needed to transfer all packets in a isoc TD. Supported values are 0-2 (1 to 3 bursts per service interval). Formula for TBC calculation is given in xhci spec section 4.11.2.3: TBC = roundup( Transfer Descriptor Packet Count / Max Burst Size +1 ) - 1 This patch should be applied to stable kernels since 3.0 that contain the commit 5cd43e33b9519143f06f507dd7cbee6b7a621885 "xhci 1.0: Set transfer burst count field." Cc: stable@vger.kernel.org # 3.0 Suggested-by: ShiChun Ma Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman

xhci: Use correct SLOT ID when handling a reset device command

2014-06-24T16:29:35Z

Command completion events normally include command completion status, SLOT_ID, and a pointer to the original command. Reset device command completion SLOT_ID may be zero according to xhci specs 4.6.11. VIA controllers set the SLOT_ID to zero, triggering a WARN_ON in the command completion handler. Use the SLOT ID found from the original command instead. This patch should be applied to stable kernels since 3.13 that contain the commit 20e7acb13ff48fbc884d5918c3697c27de63922a "xhci: use completion event's slot id rather than dig it out of command" Cc: stable@vger.kernel.org # 3.13 Reported-by: Saran Neti Tested-by: Saran Neti Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman

USB: EHCI: avoid BIOS handover on the HASEE E200

2014-06-18T00:05:49Z

Leandro Liptak reports that his HASEE E200 computer hangs when we ask the BIOS to hand over control of the EHCI host controller. This definitely sounds like a bug in the BIOS, but at the moment there is no way to fix it. This patch works around the problem by avoiding the handoff whenever the motherboard and BIOS version match those of Leandro's computer. Signed-off-by: Alan Stern Reported-by: Leandro Liptak Tested-by: Leandro Liptak CC: Signed-off-by: Greg Kroah-Hartman

xhci: Fix sleeping with IRQs disabled in xhci_stop_device()

2014-06-17T23:44:57Z

xhci_stop_device() allocates and issues stop commands for each active endpoint. This is done with spinlock held and interrupt disabled so we can't sleep during memory allocation. Use GFP_NOWAIT instead Regression from commit ddba5cd0aeff5bbed92ebdf4b1223300b0541e78 "xhci: Use command structures when queuing commands on the command ring" for 3.16-rc1 Fixes: ddba5cd0aeff ("xhci: Use command structures when queuing commands") Reported-by: Dan Williams Reported-by: Johannes Berg Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2014-06-10T01:10:34Z

Pull MIPS updates from Ralf Baechle: - three fixes for 3.15 that didn't make it in time - limited Octeon 3 support. - paravirtualization support - improvment to platform support for Netlogix SOCs. - add support for powering down the Malta eval board in software - add many instructions to the in-kernel microassembler. - add support for the BPF JIT. - minor cleanups of the BCM47xx code. - large cleanup of math emu code resulting in significant code size reduction, better readability of the code and more accurate emulation. - improvments to the MIPS CPS code. - support C3 power status for the R4k count/compare clock device. - improvments to the GIO support for older SGI workstations. - increase number of supported CPUs to 256; this can be reached on certain embedded multithreaded ccNUMA configurations. - various small cleanups, updates and fixes * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits) MIPS: IP22/IP28: Improve GIO support MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX DEC: Document the R4k MB ASIC mini interrupt controller DEC: Add self as the maintainer MIPS: Add microMIPS MSA support. MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents. MIPS: Replace obsolete strict_strto call with kstrto MIPS: BFP: Simplify code slightly. MIPS: Call find_vma with the mmap_sem held MIPS: Fix 'write_msa_##' inline macro. MIPS: Fix MSA toolchain support detection. mips: Update the email address of Geert Uytterhoeven MIPS: Add minimal defconfig for mips_paravirt MIPS: Enable build for new system 'paravirt' MIPS: paravirt: Add pci controller for virtio MIPS: Add code for new system 'paravirt' MIPS: Add functions for hypervisor call MIPS: OCTEON: Add OCTEON3 to __get_cpu_type MIPS: Add function get_ebase_cpunum MIPS: Add minimal support for OCTEON3 to c-r4k.c ...

Merge branch 'next' (accumulated 3.16 merge window patches) into master

2014-06-08T18:31:16Z

Now that 3.15 is released, this merges the 'next' branch into 'master', bringing us to the normal situation where my 'master' branch is the merge window. * accumulated work in next: (6809 commits) ufs: sb mutex merge + mutex_destroy powerpc: update comments for generic idle conversion cris: update comments for generic idle conversion idle: remove cpu_idle() forward declarations nbd: zero from and len fields in NBD_CMD_DISCONNECT. mm: convert some level-less printks to pr_* MAINTAINERS: adi-buildroot-devel is moderated MAINTAINERS: add linux-api for review of API/ABI changes mm/kmemleak-test.c: use pr_fmt for logging fs/dlm/debug_fs.c: replace seq_printf by seq_puts fs/dlm/lockspace.c: convert simple_str to kstr fs/dlm/config.c: convert simple_str to kstr mm: mark remap_file_pages() syscall as deprecated mm: memcontrol: remove unnecessary memcg argument from soft limit functions mm: memcontrol: clean up memcg zoneinfo lookup mm/memblock.c: call kmemleak directly from memblock_(alloc|free) mm/mempool.c: update the kmemleak stack trace for mempool allocations lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations mm: introduce kmemleak_update_trace() mm/kmemleak.c: use %u to print ->checksum ...

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

2014-06-04T22:59:13Z

Pull core irq updates from Thomas Gleixner: "The irq department delivers: - Another tree wide update to get rid of the horrible create_irq interface along with its even more horrible variants. That also gets rid of the last leftovers of the initial sparse irq hackery. arch/driver specific changes have been either acked or ignored. - A fix for the spurious interrupt detection logic with threaded interrupts. - A new ARM SoC interrupt controller - The usual pile of fixes and improvements all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) Documentation: brcmstb-l2: Add Broadcom STB Level-2 interrupt controller binding irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller genirq: Improve documentation to match current implementation ARM: iop13xx: fix msi support with sparse IRQ genirq: Provide !SMP stub for irq_set_affinity_notifier() irqchip: armada-370-xp: Move the devicetree binding documentation irqchip: gic: Use mask field in GICC_IAR genirq: Remove dynamic_irq mess ia64: Use irq_init_desc genirq: Replace dynamic_irq_init/cleanup genirq: Remove irq_reserve_irq[s] genirq: Replace reserve_irqs in core code s390: Avoid call to irq_reserve_irqs() s390: Remove pointless arch_show_interrupts() s390: pci: Check return value of alloc_irq_desc() proper sh: intc: Remove pointless irq_reserve_irqs() invocation x86, irq: Remove pointless irq_reserve_irqs() call genirq: Make create/destroy_irq() ia64 private tile: Use SPARSE_IRQ tile: pci: Use irq_alloc/free_hwirq() ...