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authorJason Gunthorpe <jgg@nvidia.com>2023-06-27 14:06:29 -0300
committerJason Gunthorpe <jgg@nvidia.com>2023-06-27 14:06:29 -0300
commit5f004bcaee4cb552cf1b46a505f18f08777db7e5 (patch)
treec81bdd8e01ba8de9862c8bdb1b210559d4bcf154 /drivers/acpi/sleep.c
parent4251f631fdfba0b38e4634510c5950ee157cc069 (diff)
parent6995e2de6891c724bfeb2db33d7b87775f913ad1 (diff)
Merge tag 'v6.4' into rdma.git for-next
Linux 6.4 Resolve conflicts between rdma rc and next in rxe_cq matching linux-next: drivers/infiniband/sw/rxe/rxe_cq.c: https://lore.kernel.org/r/20230622115246.365d30ad@canb.auug.org.au Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 72470b9f16c4..f32570f72b90 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -636,11 +636,19 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
}
/*
- * Disable and clear GPE status before interrupt is enabled. Some GPEs
- * (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
- * acpi_leave_sleep_state will reenable specific GPEs later
+ * Disable all GPE and clear their status bits before interrupts are
+ * enabled. Some GPEs (like wakeup GPEs) have no handlers and this can
+ * prevent them from producing spurious interrups.
+ *
+ * acpi_leave_sleep_state() will reenable specific GPEs later.
+ *
+ * Because this code runs on one CPU with disabled interrupts (all of
+ * the other CPUs are offline at this time), it need not acquire any
+ * sleeping locks which may trigger an implicit preemption point even
+ * if there is no contention, so avoid doing that by using a low-level
+ * library routine here.
*/
- acpi_disable_all_gpes();
+ acpi_hw_disable_all_gpes();
/* Allow EC transactions to happen. */
acpi_ec_unblock_transactions();