params: cleanup sysfs allocation

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commit 63662139e5 attempted to patch a
leak (which would only happen on OOM, ie. never), but it didn't quite
work.

This rewrites the code to be as simple as possible.  add_sysfs_param()
adds a parameter.  If it fails, it's the caller's responsibility to
clean up the parameters which already exist.

The kzalloc-then-always-krealloc pattern is perhaps overly simplistic,
but this code has clearly confused people.  It worked on me...

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

...

This commit is contained in:

Rusty Russell 2014-11-10 09:32:29 +10:30

parent 6da0b56515

commit 18eb74fa94

1 changed files with 44 additions and 51 deletions

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kernel/params.c

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