Rafael J. Wysocki fddbdd20c8
PM: runtime: Add safety net to supplier device release ...
[ Upstream commit d1579e61192e0e686faa4208500ef4c3b529b16c ]
Because refcount_dec_not_one() returns true if the target refcount
becomes saturated, it is generally unsafe to use its return value as
a loop termination condition, but that is what happens when a device
link's supplier device is released during runtime PM suspend
operations and on device link removal.
To address this, introduce pm_runtime_release_supplier() to be used
in the above cases which will check the supplier device's runtime
PM usage counter in addition to the refcount_dec_not_one() return
value, so the loop can be terminated in case the rpm_active refcount
value becomes invalid, and update the code in question to use it as
appropriate.
This change is not expected to have any visible functional impact.
Reported-by: Peter Zijlstra <peterz@infradead.org >
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com >
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Signed-off-by: Sasha Levin <sashal@kernel.org >
2022-01-27 11:04:44 +01:00
2021-08-19 15:07:03 +02:00
2021-09-02 22:49:16 +02:00
2021-11-18 19:17:06 +01:00
2022-01-27 11:02:57 +01:00
2021-08-23 18:05:31 -04:00
2021-09-07 12:38:59 -07:00
2021-12-08 09:04:54 +01:00
2021-08-31 16:43:06 -07:00
2022-01-27 11:02:49 +01:00
2021-09-03 16:20:37 -07:00
2021-09-20 12:43:34 +01:00
2021-11-25 09:48:24 +01:00
2021-09-01 15:25:28 -07:00
2021-08-23 11:06:28 +01:00
2021-11-25 09:49:07 +01:00
2021-09-07 14:02:58 -07:00
2021-09-01 10:29:29 -07:00
2021-10-14 12:47:29 +01:00
2021-08-29 14:47:42 +03:00
2021-09-04 10:25:26 -07:00
2021-11-18 19:15:59 +01:00
2021-11-06 14:13:30 +01:00
2021-12-08 09:04:41 +01:00
2021-10-07 16:51:57 +02:00
2021-09-03 09:58:10 -07:00
2021-09-03 10:08:28 -07:00
2021-08-31 09:41:22 -07:00
2021-08-31 09:41:22 -07:00
2021-08-23 12:54:30 -06:00
2022-01-27 11:04:15 +01:00
2021-11-21 13:44:13 +01:00
2021-09-09 19:14:33 -04:00
2021-10-26 12:35:16 -07:00
2022-01-27 11:03:27 +01:00
2021-11-18 19:16:20 +01:00
2021-12-14 10:57:09 +01:00
2021-08-20 00:09:49 +02:00
2021-08-25 19:41:39 -07:00
2021-09-24 16:13:35 -07:00
2021-09-01 10:29:10 +02:00
2021-11-18 19:17:21 +01:00
2021-09-13 16:35:58 -07:00
2021-09-13 16:35:58 -07:00
2021-09-01 15:26:45 -07:00
2021-09-03 09:58:17 -07:00
2021-09-08 15:32:35 -07:00
2021-09-13 10:43:04 -07:00
2021-09-12 16:09:26 -07:00
2021-09-13 10:18:28 -07:00
2021-09-13 10:43:04 -07:00
2021-12-29 12:28:49 +01:00
2021-11-18 19:16:03 +01:00
2021-08-18 22:33:28 +02:00
2021-09-11 00:41:21 +02:00
2021-11-18 19:16:45 +01:00
2021-10-18 20:22:03 -10:00
2021-09-21 17:34:53 +02:00
2021-08-20 12:32:59 +02:00
2021-08-24 17:09:01 -05:00
2021-09-08 11:50:24 -07:00
2021-08-26 16:52:03 -07:00
2021-12-14 10:57:11 +01:00
2021-08-31 14:55:09 -07:00
2021-09-03 10:34:44 -07:00
2021-11-18 19:16:00 +01:00
2021-08-18 13:27:49 +02:00
2021-08-19 09:02:39 +02:00
2021-11-25 09:48:41 +01:00
2022-01-05 12:42:34 +01:00
2021-10-18 20:22:03 -10:00
2021-09-07 21:17:28 +02:00
2021-08-19 11:19:41 +01:00
2021-08-26 15:32:28 -04:00
2021-10-05 12:38:39 +01:00
2021-11-18 19:17:06 +01:00
2021-08-24 07:38:29 -07:00
2021-08-28 01:33:02 +02:00
2021-08-20 11:39:26 +01:00
2021-08-26 15:32:10 -04:00
2022-01-11 15:35:16 +01:00
2021-09-06 07:20:56 -04:00
2021-12-14 10:57:09 +01:00
2021-11-18 19:16:25 +01:00
2022-01-20 09:13:13 +01:00
2021-11-25 09:49:08 +01:00
2021-08-27 13:34:02 +01:00
2022-01-11 15:35:11 +01:00
2021-09-23 19:26:54 +02:00
2021-10-15 21:02:50 -06:00
2022-01-27 11:04:41 +01:00
2021-09-08 11:50:24 -07:00
2021-09-03 09:58:13 -07:00
2021-09-03 09:58:16 -07:00
2021-09-08 18:45:53 -07:00
2021-08-26 10:18:56 +02:00
2021-12-29 12:28:49 +01:00
2021-08-19 10:41:08 +02:00
2021-08-19 10:41:08 +02:00
2021-08-23 13:10:37 -06:00
2021-08-20 17:14:35 +02:00
2021-09-03 10:44:35 -07:00
2021-08-18 07:23:15 -06:00
2021-11-25 09:48:42 +01:00
2021-12-29 12:28:42 +01:00
2021-09-22 14:29:32 +01:00
2021-11-18 19:16:13 +01:00
2021-08-19 09:02:55 +09:00
2021-11-12 15:05:49 +01:00
2021-12-08 09:04:41 +01:00
2021-09-23 11:01:12 -04:00
2021-09-06 06:30:45 -04:00
2021-08-18 08:27:30 +02:00
2021-11-18 19:15:51 +01:00
2021-11-12 15:05:48 +01:00
2021-11-12 15:05:48 +01:00
2021-09-19 12:08:37 +01:00
2022-01-05 12:42:33 +01:00
2021-09-03 10:08:28 -07:00
2021-09-08 11:50:23 -07:00
2021-10-18 20:22:02 -10:00
2021-09-03 09:58:17 -07:00
2021-12-14 10:57:22 +01:00
2021-09-24 16:13:35 -07:00
2021-08-19 13:06:53 +01:00
2021-08-19 09:02:55 +09:00
2021-09-07 11:03:45 -07:00
2021-09-03 18:42:01 +02:00
2021-09-16 13:05:42 -07:00
2021-08-20 12:32:58 +02:00
2022-01-27 11:03:00 +01:00
2021-08-26 10:36:51 -06:00
2021-11-18 19:17:14 +01:00
2021-08-23 13:19:12 +02:00
2021-12-08 09:04:49 +01:00
2021-08-25 15:20:25 +01:00
2021-08-27 16:37:17 -04:00
2021-11-18 19:17:02 +01:00
2021-09-14 09:02:50 +02:00
2022-01-27 11:04:15 +01:00
2021-09-07 12:27:27 -07:00
2021-08-25 15:43:26 -05:00
2021-09-08 11:50:25 -07:00
2021-09-13 10:18:28 -07:00
2021-09-17 13:52:17 +01:00
2021-09-08 11:50:24 -07:00
2021-09-08 11:50:24 -07:00
2021-10-28 17:18:55 -07:00
2021-09-08 12:55:35 -07:00
2021-08-18 17:32:42 -05:00
2021-09-07 19:13:42 -07:00
2021-09-02 17:59:58 +02:00
2021-08-19 14:13:28 +01:00
2021-09-07 19:13:42 -07:00
2021-11-21 13:44:14 +01:00
2022-01-20 09:13:14 +01:00
2021-09-07 14:04:59 +01:00
2021-08-18 11:39:46 -07:00
2021-09-20 22:28:47 +02:00
2021-08-18 16:08:11 +02:00
2021-08-26 11:28:07 -07:00
2022-01-27 11:04:44 +01:00
2021-08-18 22:08:24 +02:00
2021-11-18 19:17:14 +01:00
2021-11-25 09:48:45 +01:00
2022-01-27 11:04:27 +01:00
2022-01-27 11:03:52 +01:00
2021-09-02 21:38:56 +02:00
2021-10-07 16:51:57 +02:00
2021-08-26 13:40:35 +01:00
2021-11-18 19:16:58 +01:00
2021-09-02 22:07:17 +02:00
2021-08-24 19:52:40 -03:00
2021-10-01 13:57:57 +02:00
2021-10-18 20:22:03 -10:00
2021-11-12 15:05:48 +01:00
2021-11-18 19:17:12 +01:00
2021-09-03 09:58:12 -07:00
2021-11-18 19:16:01 +01:00
2021-12-08 09:04:47 +01:00
2022-01-27 11:04:02 +01:00
2021-11-18 19:16:45 +01:00
2021-09-04 10:22:01 +02:00
2021-08-31 16:43:06 -07:00
2021-08-19 09:02:55 +09:00
2022-01-27 11:03:21 +01:00
2021-11-21 13:44:12 +01:00
2021-09-03 09:58:17 -07:00
2021-09-09 13:25:49 -07:00
2021-12-29 12:28:54 +01:00
2021-09-08 11:50:28 -07:00
2021-09-08 17:44:26 +02:00
2021-11-18 19:16:41 +01:00
2021-11-25 09:48:34 +01:00
2021-10-18 18:12:09 -04:00
2021-09-22 10:24:01 -04:00
2021-09-08 15:32:35 -07:00
2021-09-15 09:22:35 -06:00
2021-09-08 12:55:35 -07:00
2021-10-18 16:02:30 -05:00
2021-09-03 09:58:16 -07:00
2021-09-06 07:20:57 -04:00
2021-08-26 10:36:51 -06:00
2021-09-06 07:20:57 -04:00
2021-12-29 12:28:43 +01:00
2021-09-03 09:58:16 -07:00
2021-09-08 11:50:24 -07:00
2021-09-03 09:58:17 -07:00
2021-12-14 10:57:15 +01:00
2021-08-22 10:28:08 +02:00
2021-09-13 07:53:27 -10:00
2021-09-03 10:08:28 -07:00
fddbdd20c8