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authorAlexander Usyskin <alexander.usyskin@intel.com>2017-06-29 09:40:02 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-07-17 15:07:39 +0200
commit67de6bf1e4f869a490656448f471fdc4a0a405ad (patch)
tree45c9b2ea2bfb5ed679a504bdbd950fc4c442388f /drivers/misc
parent5b7d40cdcd15f8058de956046f751d22a464394b (diff)
mei: me: enable asynchronous probing
On some platforms, currently Broxton, Apollo Lake and Kaby Lake, ME FW may be busy with internal bookkeeping and answering late to the start message. As a mitigation, the driver requests for a synchronous probing to prevent stalling of the overall boot process. For example, on a Apollo Lake platform the overall boot time has reduced from ~0.9 to ~0.6 seconds on average. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/pci-me.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 8621a198a2ce..8bf9a3d9792d 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -485,6 +485,7 @@ static struct pci_driver mei_me_driver = {
.remove = mei_me_remove,
.shutdown = mei_me_shutdown,
.driver.pm = MEI_ME_PM_OPS,
+ .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS,
};
module_pci_driver(mei_me_driver);