Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 244 insertions, 0 deletions

diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
new file mode 100644
index 000000000..d910a5d1a
--- /dev/null
+++ b/drivers/phy/qualcomm/Kconfig
@@ -0,0 +1,244 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Phy drivers for Qualcomm and Atheros platforms
+#
+config PHY_ATH79_USB
+	tristate "Atheros AR71XX/9XXX USB PHY driver"
+	depends on OF && (ATH79 || COMPILE_TEST)
+	default y if USB_EHCI_HCD_PLATFORM || USB_OHCI_HCD_PLATFORM
+	select RESET_CONTROLLER
+	select GENERIC_PHY
+	help
+	  Enable this to support the USB PHY on Atheros AR71XX/9XXX SoCs.
+
+config PHY_QCOM_APQ8064_SATA
+	tristate "Qualcomm APQ8064 SATA SerDes/PHY driver"
+	depends on ARCH_QCOM
+	depends on HAS_IOMEM
+	depends on OF
+	select GENERIC_PHY
+
+config PHY_QCOM_EDP
+	tristate "Qualcomm eDP PHY driver"
+	depends on ARCH_QCOM || COMPILE_TEST
+	depends on OF
+	depends on COMMON_CLK
+	select GENERIC_PHY
+	help
+	  Enable this driver to support the Qualcomm eDP PHY found in various
+	  Qualcomm chipsets.
+
+config PHY_QCOM_IPQ4019_USB
+	tristate "Qualcomm IPQ4019 USB PHY driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Support for the USB PHY-s on Qualcomm IPQ40xx SoC-s.
+
+config PHY_QCOM_IPQ806X_SATA
+	tristate "Qualcomm IPQ806x SATA SerDes/PHY driver"
+	depends on ARCH_QCOM
+	depends on HAS_IOMEM
+	depends on OF
+	select GENERIC_PHY
+
+config PHY_QCOM_PCIE2
+	tristate "Qualcomm PCIe Gen2 PHY Driver"
+	depends on OF && COMMON_CLK && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Enable this to support the Qualcomm PCIe PHY, used with the Synopsys
+	  based PCIe controller.
+
+menuconfig PHY_QCOM_QMP
+	tristate "Qualcomm QMP PHY Drivers"
+	depends on OF && COMMON_CLK && (ARCH_QCOM || COMPILE_TEST)
+
+if PHY_QCOM_QMP
+
+config PHY_QCOM_QMP_COMBO
+	tristate "Qualcomm QMP Combo PHY Driver"
+	default PHY_QCOM_QMP
+	depends on TYPEC || TYPEC=n
+	depends on DRM || DRM=n
+	select GENERIC_PHY
+	select MFD_SYSCON
+	select DRM_AUX_BRIDGE if DRM_BRIDGE
+	help
+	  Enable this to support the QMP Combo PHY transceiver that is used
+	  with USB3 and DisplayPort controllers on Qualcomm chips.
+
+config PHY_QCOM_QMP_PCIE
+	tristate "Qualcomm QMP PCIe PHY Driver"
+	depends on PCI || COMPILE_TEST
+	select GENERIC_PHY
+	default PHY_QCOM_QMP
+	help
+	  Enable this to support the QMP PCIe PHY transceiver that is used
+	  with PCIe controllers on Qualcomm chips.
+
+config PHY_QCOM_QMP_PCIE_MULTIPHY
+	tristate "Qualcomm QMP PCIe Multi PHY Driver"
+	depends on PCI || COMPILE_TEST
+	select GENERIC_PHY
+	help
+	  Enable this to support the QMP PCIe PHY transceiver that is used
+	  with PCIe controllers on Qualcomm chips. This PHY is a single
+	  multi-lane QMP block that can be configured either as one wide
+	  link or as multiple narrower independent links (bifurcation).
+
+config PHY_QCOM_QMP_PCIE_8996
+	tristate "Qualcomm QMP PCIe 8996 PHY Driver"
+	depends on PCI || COMPILE_TEST
+	select GENERIC_PHY
+	default PHY_QCOM_QMP
+	help
+	  Enable this to support the QMP PCIe PHY transceiver that is used
+	  with PCIe controllers on Qualcomm msm8996 chips.
+
+config PHY_QCOM_QMP_UFS
+	tristate "Qualcomm QMP UFS PHY Driver"
+	select GENERIC_PHY
+	default PHY_QCOM_QMP
+	help
+	  Enable this to support the QMP UFS PHY transceiver that is used
+	  with UFS controllers on Qualcomm chips.
+
+config PHY_QCOM_QMP_USB
+	tristate "Qualcomm QMP USB PHY Driver"
+	select GENERIC_PHY
+	default PHY_QCOM_QMP
+	help
+	  Enable this to support the QMP USB PHY transceiver that is used
+	  with USB3 controllers on Qualcomm chips.
+
+config PHY_QCOM_QMP_USB_LEGACY
+	tristate "Qualcomm QMP legacy USB PHY Driver"
+	select GENERIC_PHY
+	default n
+	help
+	  Enable this legacy driver to support the QMP USB+DisplayPort Combo
+	  PHY transceivers working only in USB3 mode on Qualcomm chips. This
+	  driver exists only for compatibility with older device trees,
+	  existing users have been migrated to PHY_QCOM_QMP_COMBO driver.
+
+endif # PHY_QCOM_QMP
+
+config PHY_QCOM_QUSB2
+	tristate "Qualcomm QUSB2 PHY Driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	depends on NVMEM || !NVMEM
+	select GENERIC_PHY
+	help
+	  Enable this to support the HighSpeed QUSB2 PHY transceiver for USB
+	  controllers on Qualcomm chips. This driver supports the high-speed
+	  PHY which is usually paired with either the ChipIdea or Synopsys DWC3
+	  USB IPs on MSM SOCs.
+
+config PHY_QCOM_EUSB2_REPEATER
+	tristate "Qualcomm PMIC eUSB2 Repeater Driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Enable support for the USB high-speed eUSB2 repeater on Qualcomm
+	  PMICs. The repeater is paired with a Synopsys or M31 eUSB2 Phy
+	  on Qualcomm SOCs.
+
+config PHY_QCOM_M31_USB
+	tristate "Qualcomm M31 HS PHY driver support"
+	depends on USB && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Enable this to support M31 HS PHY transceivers on Qualcomm chips
+	  with DWC3 USB core. It handles PHY initialization, clock
+	  management required after resetting the hardware and power
+	  management. This driver is required even for peripheral only or
+	  host only mode configurations.
+
+config PHY_QCOM_UNIPHY_PCIE_28LP
+	bool "PCIE UNIPHY 28LP PHY driver"
+	depends on ARCH_QCOM
+	depends on COMMON_CLK
+	depends on HAS_IOMEM
+	depends on OF
+	select GENERIC_PHY
+	help
+	  Enable this to support the PCIe UNIPHY 28LP phy transceiver that
+	  is used with PCIe controllers on Qualcomm IPQ5332 chips. It
+	  handles PHY initialization, clock management required after
+	  resetting the hardware and power management.
+
+config PHY_QCOM_M31_EUSB
+	tristate "Qualcomm M31 eUSB2 PHY driver support"
+	depends on USB && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Enable this to support M31 EUSB2 PHY transceivers on Qualcomm
+	  chips with DWC3 USB core. It supports initializing and cleaning
+	  up of the associated USB repeater that is paired with the eUSB2
+	  PHY.
+
+config PHY_QCOM_USB_HS
+	tristate "Qualcomm USB HS PHY module"
+	depends on USB_ULPI_BUS
+	depends on EXTCON || !EXTCON # if EXTCON=m, this cannot be built-in
+	select GENERIC_PHY
+	help
+	  Support for the USB high-speed ULPI compliant phy on Qualcomm
+	  chipsets.
+
+config PHY_QCOM_USB_SNPS_FEMTO_V2
+	tristate "Qualcomm SNPS FEMTO USB HS PHY V2 module"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  Enable support for the USB high-speed SNPS Femto phy on Qualcomm
+	  chipsets.  This PHY has differences in the register map compared
+	  to the V1 variants.  The PHY is paired with a Synopsys DWC3 USB
+	  controller on Qualcomm SOCs.
+
+config PHY_QCOM_USB_HSIC
+	tristate "Qualcomm USB HSIC ULPI PHY module"
+	depends on USB_ULPI_BUS
+	select GENERIC_PHY
+	help
+	  Support for the USB HSIC ULPI compliant PHY on QCOM chipsets.
+
+config PHY_QCOM_USB_HS_28NM
+	tristate "Qualcomm 28nm High-Speed PHY"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	depends on EXTCON || !EXTCON # if EXTCON=m, this cannot be built-in
+	select GENERIC_PHY
+	help
+	  Enable this to support the Qualcomm Synopsys DesignWare Core 28nm
+	  High-Speed PHY driver. This driver supports the Hi-Speed PHY which
+	  is usually paired with either the ChipIdea or Synopsys DWC3 USB
+	  IPs on MSM SOCs.
+
+config PHY_QCOM_USB_SS
+	tristate "Qualcomm USB Super-Speed PHY driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	depends on EXTCON || !EXTCON # if EXTCON=m, this cannot be built-in
+	select GENERIC_PHY
+	help
+	  Enable this to support the Super-Speed USB transceiver on various
+	  Qualcomm chipsets.
+
+config PHY_QCOM_IPQ806X_USB
+	tristate "Qualcomm IPQ806x DWC3 USB PHY driver"
+	depends on HAS_IOMEM
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	select GENERIC_PHY
+	help
+	  This option enables support for the Synopsis PHYs present inside the
+	  Qualcomm USB3.0 DWC3 controller on ipq806x SoC. This driver supports
+	  both HS and SS PHY controllers.
+
+config PHY_QCOM_SGMII_ETH
+	tristate "Qualcomm DWMAC SGMII SerDes/PHY driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	depends on HAS_IOMEM
+	select GENERIC_PHY
+	help
+	  Enable this to support the internal SerDes/SGMII PHY on various
+	  Qualcomm chipsets.