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PM: sleep: Fix error handling in dpm_prepare()
commit 544e737 upstream. Commit 2aa3660 ("PM: sleep: Avoid calling put_device() under dpm_list_mtx") forgot to update the while () loop termination condition to also break the loop if error is nonzero, which causes the loop to become infinite if device_prepare() returns an error for one device. Add the missing !error check. Fixes: 2aa3660 ("PM: sleep: Avoid calling put_device() under dpm_list_mtx") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reported-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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