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, 71 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm2000.h b/sound/soc/codecs/wm2000.h
new file mode 100644
index 000000000..6d3241dea
--- /dev/null
+++ b/sound/soc/codecs/wm2000.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * wm2000.h  --  WM2000 Soc Audio driver
+ */
+
+#ifndef _WM2000_H
+#define _WM2000_H
+
+#define WM2000_REG_SYS_START	    0x8000
+#define WM2000_REG_ANC_GAIN_CTRL    0x8fa2
+#define WM2000_REG_MSE_TH2          0x8fdf
+#define WM2000_REG_MSE_TH1          0x8fe0
+#define WM2000_REG_SPEECH_CLARITY   0x8fef
+#define WM2000_REG_SYS_WATCHDOG     0x8ff6
+#define WM2000_REG_ANA_VMID_PD_TIME 0x8ff7
+#define WM2000_REG_ANA_VMID_PU_TIME 0x8ff8
+#define WM2000_REG_CAT_FLTR_INDX    0x8ff9
+#define WM2000_REG_CAT_GAIN_0       0x8ffa
+#define WM2000_REG_SYS_STATUS       0x8ffc
+#define WM2000_REG_SYS_MODE_CNTRL   0x8ffd
+#define WM2000_REG_SYS_START0       0x8ffe
+#define WM2000_REG_SYS_START1       0x8fff
+#define WM2000_REG_ID1              0xf000
+#define WM2000_REG_ID2              0xf001
+#define WM2000_REG_REVISON          0xf002
+#define WM2000_REG_SYS_CTL1         0xf003
+#define WM2000_REG_SYS_CTL2         0xf004
+#define WM2000_REG_ANC_STAT         0xf005
+#define WM2000_REG_IF_CTL           0xf006
+#define WM2000_REG_ANA_MIC_CTL      0xf028
+#define WM2000_REG_SPK_CTL          0xf034
+
+/* SPEECH_CLARITY */
+#define WM2000_SPEECH_CLARITY   0x01
+
+/* SYS_STATUS */
+#define WM2000_STATUS_MOUSE_ACTIVE              0x40
+#define WM2000_STATUS_CAT_FREQ_COMPLETE         0x20
+#define WM2000_STATUS_CAT_GAIN_COMPLETE         0x10
+#define WM2000_STATUS_THERMAL_SHUTDOWN_COMPLETE 0x08
+#define WM2000_STATUS_ANC_DISABLED              0x04
+#define WM2000_STATUS_POWER_DOWN_COMPLETE       0x02
+#define WM2000_STATUS_BOOT_COMPLETE             0x01
+
+/* SYS_MODE_CNTRL */
+#define WM2000_MODE_ANA_SEQ_INCLUDE 0x80
+#define WM2000_MODE_MOUSE_ENABLE    0x40
+#define WM2000_MODE_CAT_FREQ_ENABLE 0x20
+#define WM2000_MODE_CAT_GAIN_ENABLE 0x10
+#define WM2000_MODE_BYPASS_ENTRY    0x08
+#define WM2000_MODE_STANDBY_ENTRY   0x04
+#define WM2000_MODE_THERMAL_ENABLE  0x02
+#define WM2000_MODE_POWER_DOWN      0x01
+
+/* SYS_CTL1 */
+#define WM2000_SYS_STBY          0x01
+
+/* SYS_CTL2 */
+#define WM2000_MCLK_DIV2_ENA_CLR 0x80
+#define WM2000_MCLK_DIV2_ENA_SET 0x40
+#define WM2000_ANC_ENG_CLR       0x20
+#define WM2000_ANC_ENG_SET       0x10
+#define WM2000_ANC_INT_N_CLR     0x08
+#define WM2000_ANC_INT_N_SET     0x04
+#define WM2000_RAM_CLR           0x02
+#define WM2000_RAM_SET           0x01
+
+/* ANC_STAT */
+#define WM2000_ANC_ENG_IDLE      0x01
+
+#endif