greybus: Tear down devices in the reverse order

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Normally, its a good practice to free resources in the reverse order in
which they are allocated, so that all the dependencies can be sorted out
properly.

This is true while creating/destroying devices as well. For example
consider this scenario (I faced a crash with control protocol due to
this). For a new module, we will first create a bundle+connection for
the control cport and then create other bundles/connections after
parsing manifest.

And while destroying interface on module hot unplug, we are removing the
devices in the order they are added. And so the bundle/connection for
the control cport are destroyed first. But, control cport was still
required while destroying other bundles/connections.

To solve this problem, lets destroy the resources in the reverse order
in which they are added.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

...

This commit is contained in:

Viresh Kumar 2015-06-04 18:16:45 +05:30 • committed by Greg Kroah-Hartman

parent d51c0ffb5c

commit 928f2abd5f

3 changed files with 4 additions and 4 deletions

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2

drivers/staging/greybus/bundle.c

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4

drivers/staging/greybus/connection.c

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2

drivers/staging/greybus/interface.c

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