Merge tag 'coresight-next-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next

Suzuki writes:

coresight: Updates for v6.5

CoreSight and hwtracing subsystem updates for v6.5 includes:

 - Fixes to the CTI module reference leaks. This involves,
   redesign of how the helper devices are tracked and CTI
   devices have been converted to helper devices.
 - Fix removal of the trctraceidr file from sysfs for ETMs.
 - Match all ETMv4 instances based on the ETMv4 architected
   registers and the CoreSight Component ID (CID), than having
   to add individual PIDs for CPUs.
 - Add support for Dummy CoreSight source and sink drivers.
 - Add James Clark as Reviewer for the CoreSight kernel drivers
 - Fixes to HiSilicon PCIe Tune and Trace Device driver

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

* tag 'coresight-next-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (27 commits)
  hwtracing: hisi_ptt: Fix potential sleep in atomic context
  hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU
  hwtracing: hisi_ptt: Export available filters through sysfs
  hwtracing: hisi_ptt: Add support for dynamically updating the filter list
  hwtracing: hisi_ptt: Factor out filter allocation and release operation
  coresight: dummy: Update type of mode parameter in dummy_{sink,source}_enable()
  Documentation: trace: Add documentation for Coresight Dummy Trace
  dt-bindings: arm: Add support for Coresight dummy trace
  Coresight: Add coresight dummy driver
  MAINTAINERS: coresight: Add James Clark as Reviewer
  coresight: etm4x: Match all ETM4 instances based on DEVARCH and DEVTYPE
  coresight: etm4x: Make etm4_remove_dev() return void
  coresight: etm4x: Fix missing trctraceidr file in sysfs
  coresight: Fix CTI module refcount leak by making it a helper device
  coresight: Enable and disable helper devices adjacent to the path
  coresight: Refactor out buffer allocation function for ETR
  coresight: Make refcount a property of the connection
  coresight: Store in-connections as well as out-connections
  coresight: Simplify connection fixup mechanism
  coresight: Store pointers to connections rather than an array of them
  ...

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 472dd24d4823..58f4f5948edb 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -223,6 +223,17 @@ static inline void *devm_kcalloc(struct device *dev,
 {
 	return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO);
 }
+static inline __realloc_size(3, 4) void * __must_check
+devm_krealloc_array(struct device *dev, void *p, size_t new_n, size_t new_size, gfp_t flags)
+{
+	size_t bytes;
+
+	if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
+		return NULL;
+
+	return devm_krealloc(dev, p, bytes, flags);
+}
+
 void devm_kfree(struct device *dev, const void *p);
 char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) __malloc;
 const char *devm_kstrdup_const(struct device *dev, const char *s, gfp_t gfp);