From 873ab3e886b52ba3d6ade3c5f3e6a0cff0c8cb12 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 1 Nov 2022 15:22:09 -0700 Subject: [PATCH] platform/chrome: cros_ec_lightbar: Set PROBE_PREFER_ASYNCHRONOUS This driver takes on the order of 15ms to start on some systems. Even on systems where there is no lightbar support, it can take a few milliseconds just to probe the EC for support. It shouldn't have many cross-device dependencies to race with, nor racy access to shared state with other drivers, so this should be a relatively low risk change. This driver was pinpointed as part of a survey of top slowest initcalls (i.e., are built in, and probing synchronously) on a lab of ChromeOS systems. Signed-off-by: Brian Norris Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20221101152132.v2.4.I565598102e0bfb03bdf8c090d3bfdf954d026bc5@changeid --- drivers/platform/chrome/cros_ec_lightbar.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c index 58beb2a..1674105 100644 --- a/drivers/platform/chrome/cros_ec_lightbar.c +++ b/drivers/platform/chrome/cros_ec_lightbar.c @@ -602,6 +602,7 @@ static struct platform_driver cros_ec_lightbar_driver = { .driver = { .name = DRV_NAME, .pm = &cros_ec_lightbar_pm_ops, + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = cros_ec_lightbar_probe, .remove = cros_ec_lightbar_remove, -- 2.7.4