[PATCH v2 0/2] Re: Problem: lockdep warning with nested instances of i2c-mux

Peter Rosin
2018-05-24T08:46:44Z

Changes since v1:
- Further compile tests indicated a missing #define for rt_mutex_lock
with lockdep enabled, so that one is added.
- I have verified that I don't get any lockdep splat for a local i2c-mux
setup with these patches applied, and that I do without them.

Again, thanks for the report!

Cheers,
Peter

Peter Rosin (2):
rtmutex: allow specifying a subclass for nested locking
i2c: mux: annotate the nested rt_mutex usage

drivers/i2c/i2c-core-base.c | 2 +-
drivers/i2c/i2c-mux.c | 4 ++--
include/linux/rtmutex.h | 7 +++++++
kernel/locking/rtmutex.c | 29 +++++++++++++++++++++++++----
4 files changed, 35 insertions(+), 7 deletions(-)

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2.11.0