remoteproc: Fix potential race condition in rproc_add

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commit d2e12e66a9 upstream.

rproc_add adds the newly created remoteproc to a list for use by
rproc_get_by_phandle and then does some additional processing to finish
adding the remoteproc. This leaves a small window of time in which the
rproc is available in the list but not yet fully initialized, so if
another driver comes along and gets a handle to the rproc, it will be
invalid. Rearrange the code in rproc_add to make sure the rproc is added
to the list only after it has been successfuly initialized.

Fixes: fec47d8635 ("remoteproc: introduce rproc_get_by_phandle API")
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dave Gerlach 2016-05-25 15:41:28 -05:00 • committed by Greg Kroah-Hartman

parent 54c4ddcbab

commit 3633bd8220

1 changed files with 9 additions and 6 deletions

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drivers/remoteproc/remoteproc_core.c

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