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, 327 insertions, 0 deletions

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
new file mode 100644
index 000000000..30ef3dc5d
--- /dev/null
+++ b/drivers/pinctrl/mediatek/Kconfig
@@ -0,0 +1,327 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "MediaTek pinctrl drivers"
+	depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
+
+config EINT_MTK
+	tristate "MediaTek External Interrupt Support"
+	depends on PINCTRL_MTK || PINCTRL_MTK_MOORE || PINCTRL_MTK_PARIS || COMPILE_TEST
+	select GPIOLIB
+	select IRQ_DOMAIN
+	default y if PINCTRL_MTK || PINCTRL_MTK_MOORE
+	default PINCTRL_MTK_PARIS
+
+config PINCTRL_MTK
+	tristate
+	depends on OF
+	select PINMUX
+	select GENERIC_PINCONF
+	select GPIOLIB
+	select EINT_MTK
+
+config PINCTRL_MTK_V2
+	tristate
+
+config PINCTRL_MTK_MTMIPS
+	tristate
+	depends on RALINK
+	select PINMUX
+	select GENERIC_PINCONF
+
+config PINCTRL_MTK_MOORE
+	tristate
+	depends on OF
+	select GENERIC_PINCONF
+	select GENERIC_PINCTRL_GROUPS
+	select GENERIC_PINMUX_FUNCTIONS
+	select GPIOLIB
+	select EINT_MTK
+	select PINCTRL_MTK_V2
+
+config PINCTRL_MTK_PARIS
+	tristate
+	depends on OF
+	select PINMUX
+	select GENERIC_PINCONF
+	select GPIOLIB
+	select EINT_MTK
+	select PINCTRL_MTK_V2
+
+# For MIPS SoCs
+config PINCTRL_MT7620
+	tristate "MediaTek MT7620 pin control"
+	depends on SOC_MT7620 || COMPILE_TEST
+	depends on RALINK
+	default SOC_MT7620
+	select PINCTRL_MTK_MTMIPS
+
+config PINCTRL_MT7621
+	tristate "MediaTek MT7621 pin control"
+	depends on SOC_MT7621 || COMPILE_TEST
+	depends on RALINK
+	default SOC_MT7621
+	select PINCTRL_MTK_MTMIPS
+
+config PINCTRL_MT76X8
+	tristate "MediaTek MT76X8 pin control"
+	depends on SOC_MT7620 || COMPILE_TEST
+	depends on RALINK
+	default SOC_MT7620
+	select PINCTRL_MTK_MTMIPS
+
+config PINCTRL_RT2880
+	tristate "Ralink RT2880 pin control"
+	depends on SOC_RT288X || COMPILE_TEST
+	depends on RALINK
+	default SOC_RT288X
+	select PINCTRL_MTK_MTMIPS
+
+config PINCTRL_RT305X
+	tristate "Ralink RT305X pin control"
+	depends on SOC_RT305X || COMPILE_TEST
+	depends on RALINK
+	default SOC_RT305X
+	select PINCTRL_MTK_MTMIPS
+
+config PINCTRL_RT3883
+	tristate "Ralink RT3883 pin control"
+	depends on SOC_RT3883 || COMPILE_TEST
+	depends on RALINK
+	default SOC_RT3883
+	select PINCTRL_MTK_MTMIPS
+
+# For ARMv7 SoCs
+config PINCTRL_MT2701
+	tristate "MediaTek MT2701 pin control"
+	depends on MACH_MT7623 || MACH_MT2701 || COMPILE_TEST
+	depends on OF
+	default MACH_MT2701
+	select PINCTRL_MTK
+
+config PINCTRL_MT7623
+	tristate "MediaTek MT7623 pin control with generic binding"
+	depends on MACH_MT7623 || COMPILE_TEST
+	depends on OF
+	default MACH_MT7623
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT7629
+	tristate "MediaTek MT7629 pin control"
+	depends on MACH_MT7629 || COMPILE_TEST
+	depends on OF
+	default MACH_MT7629
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT8135
+	tristate "MediaTek MT8135 pin control"
+	depends on MACH_MT8135 || COMPILE_TEST
+	depends on OF
+	default MACH_MT8135
+	select PINCTRL_MTK
+
+config PINCTRL_MT8127
+	tristate "MediaTek MT8127 pin control"
+	depends on MACH_MT8127 || COMPILE_TEST
+	depends on OF
+	default MACH_MT8127
+	select PINCTRL_MTK
+
+# For ARMv8 SoCs
+config PINCTRL_MT2712
+	tristate "MediaTek MT2712 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK
+
+config PINCTRL_MT6765
+	tristate "MediaTek MT6765 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT6779
+	tristate "MediaTek MT6779 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on MediaTek MT6779 SoC.
+	  In MTK platform, we support virtual gpio and use it to
+	  map specific eint which doesn't have real gpio pin.
+
+config PINCTRL_MT6795
+	tristate "MediaTek MT6795 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT6797
+	tristate "MediaTek MT6797 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT6858
+	tristate "MediaTek MT6858 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on the MediaTek MT6858 SoC.
+
+config PINCTRL_MT6878
+	tristate "MediaTek MT6878 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on the MediaTek MT6878 SoC.
+
+config PINCTRL_MT6893
+	tristate "MediaTek Dimensity MT6893 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on the MediaTek Dimensity 1200 MT6893 Smartphone SoC.
+
+config PINCTRL_MT7622
+	tristate "MediaTek MT7622 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT7981
+	tristate "MediaTek MT7981 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT7986
+	tristate "MediaTek MT7986 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT7988
+	tristate "Mediatek MT7988 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_MOORE
+
+config PINCTRL_MT8167
+	tristate "MediaTek MT8167 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK
+
+config PINCTRL_MT8173
+	tristate "MediaTek MT8173 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK
+
+config PINCTRL_MT8183
+	tristate "MediaTek MT8183 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT8186
+	tristate "MediaTek MT8186 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT8188
+	tristate "MediaTek MT8188 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on MediaTek MT8188 SoC.
+	  In MTK platform, we support virtual gpio and use it to
+	  map specific eint which doesn't have real gpio pin.
+
+config PINCTRL_MT8189
+        tristate "MediaTek MT8189 pin control"
+        depends on OF
+        depends on ARM64 || COMPILE_TEST
+        default ARM64 && ARCH_MEDIATEK
+        select PINCTRL_MTK_PARIS
+        help
+          Say yes here to support pin controller and gpio driver
+          on MediaTek MT8189 SoC.
+          In MTK platform, we support virtual gpio and use it to
+          map specific eint which doesn't have real gpio pin.
+
+config PINCTRL_MT8192
+	tristate "MediaTek MT8192 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT8195
+	tristate "MediaTek MT8195 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+
+config PINCTRL_MT8196
+	tristate "MediaTek MT8196 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK_PARIS
+	help
+	  Say yes here to support pin controller and gpio driver
+	  on MediaTek MT8196 SoC.
+	  In MTK platform, we support virtual gpio and use it to
+	  map specific eint which doesn't have real gpio pin.
+
+config PINCTRL_MT8365
+	tristate "MediaTek MT8365 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK
+
+config PINCTRL_MT8516
+	tristate "MediaTek MT8516 pin control"
+	depends on OF
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
+	select PINCTRL_MTK
+
+# For PMIC
+config PINCTRL_MT6397
+	tristate "MediaTek MT6397 pin control"
+	depends on MFD_MT6397 || COMPILE_TEST
+	depends on OF
+	default MFD_MT6397
+	select PINCTRL_MTK
+
+endmenu