Merge tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big driver core patchset for 5.1-rc1

  More patches than "normal" here this merge window, due to some work in
  the driver core by Alexander Duyck to rework the async probe
  functionality to work better for a number of devices, and independant
  work from Rafael for the device link functionality to make it work
  "correctly".

  Also in here is:

   - lots of BUS_ATTR() removals, the macro is about to go away

   - firmware test fixups

   - ihex fixups and simplification

   - component additions (also includes i915 patches)

   - lots of minor coding style fixups and cleanups.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits)
  driver core: platform: remove misleading err_alloc label
  platform: set of_node in platform_device_register_full()
  firmware: hardcode the debug message for -ENOENT
  driver core: Add missing description of new struct device_link field
  driver core: Fix PM-runtime for links added during consumer probe
  drivers/component: kerneldoc polish
  async: Add cmdline option to specify drivers to be async probed
  driver core: Fix possible supplier PM-usage counter imbalance
  PM-runtime: Fix __pm_runtime_set_status() race with runtime resume
  driver: platform: Support parsing GpioInt 0 in platform_get_irq()
  selftests: firmware: fix verify_reqs() return value
  Revert "selftests: firmware: remove use of non-standard diff -Z option"
  Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config"
  device: Fix comment for driver_data in struct device
  kernfs: Allocating memory for kernfs_iattrs with kmem_cache.
  sysfs: remove unused include of kernfs-internal.h
  driver core: Postpone DMA tear-down until after devres release
  driver core: Document limitation related to DL_FLAG_RPM_ACTIVE
  PM-runtime: Take suppliers into account in __pm_runtime_set_status()
  device.h: Add __cold to dev_<level> logging functions
  ...

1 files changed, 19 insertions, 10 deletions

diff --git a/include/linux/ihex.h b/include/linux/ihex.h
index 75c194391869..98cb5ce0b0a0 100644
--- a/include/linux/ihex.h
+++ b/include/linux/ihex.h
@@ -21,12 +21,24 @@ struct ihex_binrec {
 	uint8_t data[0];
 } __attribute__((packed));
 
+static inline uint16_t ihex_binrec_size(const struct ihex_binrec *p)
+{
+	return be16_to_cpu(p->len) + sizeof(*p);
+}
+
 /* Find the next record, taking into account the 4-byte alignment */
 static inline const struct ihex_binrec *
+__ihex_next_binrec(const struct ihex_binrec *rec)
+{
+	const void *p = rec;
+
+	return p + ALIGN(ihex_binrec_size(rec), 4);
+}
+
+static inline const struct ihex_binrec *
 ihex_next_binrec(const struct ihex_binrec *rec)
 {
-	int next = ((be16_to_cpu(rec->len) + 5) & ~3) - 2;
-	rec = (void *)&rec->data[next];
+	rec = __ihex_next_binrec(rec);
 
 	return be16_to_cpu(rec->len) ? rec : NULL;
 }
@@ -34,18 +46,15 @@ ihex_next_binrec(const struct ihex_binrec *rec)
 /* Check that ihex_next_binrec() won't take us off the end of the image... */
 static inline int ihex_validate_fw(const struct firmware *fw)
 {
-	const struct ihex_binrec *rec;
-	size_t ofs = 0;
+	const struct ihex_binrec *end, *rec;
 
-	while (ofs <= fw->size - sizeof(*rec)) {
-		rec = (void *)&fw->data[ofs];
+	rec = (const void *)fw->data;
+	end = (const void *)&fw->data[fw->size - sizeof(*end)];
 
+	for (; rec <= end; rec = __ihex_next_binrec(rec)) {
 		/* Zero length marks end of records */
-		if (!be16_to_cpu(rec->len))
+		if (rec == end && !be16_to_cpu(rec->len))
 			return 0;
-
-		/* Point to next record... */
-		ofs += (sizeof(*rec) + be16_to_cpu(rec->len) + 3) & ~3;
 	}
 	return -EINVAL;
 }