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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-05-08 09:06:34 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-05-08 09:06:34 -0700 |
commit | c61529f6f59c9e136432cde96f9a053a51ad2a1e (patch) | |
tree | e72cbda75f28dfe4a7a67533ef11a120c0edee02 /kernel | |
parent | e7a1c733fecd6bf71f87f74b36ab51bb3eafd8b3 (diff) | |
parent | 2a15483b401c0b07e44b43b95414e36f32c02f32 (diff) | |
download | lwn-c61529f6f59c9e136432cde96f9a053a51ad2a1e.tar.gz lwn-c61529f6f59c9e136432cde96f9a053a51ad2a1e.zip |
Merge tag 'driver-core-5.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are a number of small driver core fixes for 5.7-rc5 to resolve a
bunch of reported issues with the current tree.
Biggest here are the reverts and patches from John Stultz to resolve a
bunch of deferred probe regressions we have been seeing in 5.7-rc
right now.
Along with those are some other smaller fixes:
- coredump crash fix
- devlink fix for when permissive mode was enabled
- amba and platform device dma_parms fixes
- component error silenced for when deferred probe happens
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
regulator: Revert "Use driver_deferred_probe_timeout for regulator_init_complete_work"
driver core: Ensure wait_for_device_probe() waits until the deferred_probe_timeout fires
driver core: Use dev_warn() instead of dev_WARN() for deferred_probe_timeout warnings
driver core: Revert default driver_deferred_probe_timeout value to 0
component: Silence bind error on -EPROBE_DEFER
driver core: Fix handling of fw_devlink=permissive
coredump: fix crash when umh is disabled
amba: Initialize dma_parms for amba devices
driver core: platform: Initialize dma_parms for platform devices
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/umh.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/umh.c b/kernel/umh.c index 7f255b5a8845..11bf5eea474c 100644 --- a/kernel/umh.c +++ b/kernel/umh.c @@ -544,6 +544,11 @@ EXPORT_SYMBOL_GPL(fork_usermode_blob); * Runs a user-space application. The application is started * asynchronously if wait is not set, and runs as a child of system workqueues. * (ie. it runs with full root capabilities and optimized affinity). + * + * Note: successful return value does not guarantee the helper was called at + * all. You can't rely on sub_info->{init,cleanup} being called even for + * UMH_WAIT_* wait modes as STATIC_USERMODEHELPER_PATH="" turns all helpers + * into a successful no-op. */ int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait) { |