From: Rafael J. Wysocki rafael.j.wysocki@intel.com
commit 544e737dea5ad1a457f25dbddf68761ff25e028b upstream.
Commit 2aa36604e824 ("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: 2aa36604e824 ("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 --- drivers/base/power/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1906,7 +1906,7 @@ int dpm_prepare(pm_message_t state) device_block_probing();
mutex_lock(&dpm_list_mtx); - while (!list_empty(&dpm_list)) { + while (!list_empty(&dpm_list) && !error) { struct device *dev = to_device(dpm_list.next);
get_device(dev);