1. 25 Apr, 2019 4 commits
    • Serge Semin's avatar
      usb: usb251xb: Lock i2c-bus segment the hub resides · 6e3c8beb
      Serge Semin authored
      SMBus slave configuration is activated by CFG_SEL[1:0]=0x1 pins
      state. This is the mode the hub is supposed to be to let this driver
      work correctly. But a race condition might happen right after reset
      is cleared due to CFG_SEL[0] pin being multiplexed with SMBus SCL
      function. In case if the reset pin is handled by a i2c GPIO expander,
      which is also placed at the same i2c-bus segment as the usb251x
      SMB-interface connected to, then the hub reset clearance might
      cause the CFG_SEL[0] being latched in unpredictable state. So
      sometimes the hub configuration mode might be 0x1 (as expected),
      but sometimes being 0x0, which doesn't imply to have the hub SMBus-slave
      interface activated and consequently causes this driver failure.
      
      In order to fix the problem we must make sure the GPIO-reset chip doesn't
      reside the same i2c-bus segment as the SMBus-interface of the hub. If
      it doesn't, we can safely block the segment for the time the reset is
      cleared to prevent anyone generating a traffic at the i2c-bus SCL lane
      connected to the CFG_SEL[0] pin. But if it does, nothing we can do, so
      just return an error. If we locked the i2c-bus segment and tried to
      communicate with the GPIO-expander, it would cause a deadlock. If we didn't
      lock the i2c-bus segment, it would randomly cause the CFG_SEL[0] bit flip.
      Signed-off-by: default avatarSerge Semin <fancer.lancer@gmail.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      6e3c8beb
    • Marc Gonzalez's avatar
      usb: dwc3: Allow building USB_DWC3_QCOM without EXTCON · 77a49465
      Marc Gonzalez authored
      Keep EXTCON support optional, as some platforms do not need it.
      
      Do the same for USB_DWC3_OMAP while we're at it.
      
      Fixes: 3def4031 ("usb: dwc3: add EXTCON dependency for qcom")
      Signed-off-by: default avatarMarc Gonzalez <marc.w.gonzalez@free.fr>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      77a49465
    • Dan Carpenter's avatar
      usbip: stub_rx: tidy the indenting in is_clear_halt_cmd() · 409fba22
      Dan Carpenter authored
      There is an extra space character before the return statement.
      Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      409fba22
    • Greg Kroah-Hartman's avatar
      Merge tag 'phy-for-5.2' of... · d30e413f
      Greg Kroah-Hartman authored
      Merge tag 'phy-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
      
      Kishon writes:
      
      phy: for 5.2
      
        *) Add a new *release* phy_ops invoked when the consumer relinquishes PHY
           that can be used to undo the operation performed in xlate
        *) Add new driver to support USB2 PHY and shared USB3 + PCIE PHY in Amlogic
           G12A SoC Family.
        *) Add new driver to support for Broadcom's Stingray USB PHY (Type 1 has
           one super speed PHY and one high speed PHY, Type 2 has one high speed PHY)
        *) Add new driver to support USB PHY in hi3660 SoC of Hisilicon
        *) Add new driver to support UFS M-PHY in MediaTek SoC
        *) Add new driver to support XUSB pad controller in Tegra186 SoCs
        *) Add new driver to support SERDES in TI's AM654 platform
        *) Add support for generation 2 USB2 PHY and gneration 3 USB2 PHY in r8a77470
           to phy-rcar-gen2.c and phy-rcar-gen3-usb2.c respectively
        *) Add support for PCIe QMP PHY support in msm8998 to phy-qcom-qmp.c
        *) Add support for SERDES6G in phy-ocelot-serdes.c
        *) Add support to set drive impedance from device tree in phy-rockchip-emmc.c
        *) Add support to power up/down the VBUS voltage rail in phy-fsl-imx8mq-usb.c
        *) Add support to shut off regulators that power UFS during system suspend
        *) Re-design phy-rcar-gen3-usb2.c to create separate PHY instances for each
           channel which helps to enable/disable interrupts for each instance
           independently
        *) Fix PCIe power up sequence to follow the TRM in order to ensure the DPLL &
           PHY operates correctly over the entire temperature range.
        *) Use devm_clk_get_optional to get optional clocks instead of adding
           custom error checks
      Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
      
      * tag 'phy-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy: (51 commits)
        dt-bindings: phy-qcom-qmp: Tweak qcom,msm8998-qmp-ufs-phy
        dt-bindings: phy-qcom-qmp: Add qcom,msm8998-qmp-pcie-phy
        phy: Add usb phy support for hi3660 Soc of Hisilicon
        dt-bindings: phy: Add support for HiSilicon's hi3660 USB PHY
        scsi: phy: mediatek: fix typo in author's email address
        phy: ocelot-serdes: Add support for SERDES6G muxing
        phy: fsl-imx8mq-usb: add support for VBUS power control
        dt-bindings: phy-imx8mq-usb: add optional vbus supply regulator
        phy: qcom-qmp: Add msm8998 PCIe QMP PHY support
        phy: ti: am654-serdes: Support all clksel values
        phy: ti: Add a new SERDES driver for TI's AM654x SoC
        dt-bindings: phy: ti: Add dt binding documentation for SERDES in AM654x SoC
        phy: core: Invoke pm_runtime_get_*/pm_runtime_put_* before invoking reset callback
        phy: core: Add *release* phy_ops invoked when the consumer relinquishes PHY
        phy: phy-meson-gxl-usb2: get optional clock by devm_clk_get_optional()
        phy: socionext: get optional clock by devm_clk_get_optional()
        phy: qcom-qusb2: get optional clock by devm_clk_get_optional()
        phy: phy-mtk-tphy: get optional clock by devm_clk_get_optional()
        phy: renesas: rcar-gen3-usb2: enable/disable independent irqs
        phy: renesas: rcar-gen3-usb2: Use pdev's device pointer on dev_vdbg()
        ...
      d30e413f
  2. 22 Apr, 2019 1 commit
  3. 19 Apr, 2019 10 commits
  4. 18 Apr, 2019 7 commits
  5. 17 Apr, 2019 18 commits