spmi: remove wakeup command before slave probe
According to spmi spec a slave powers up into startup state and then
transitions into active state. Thus, the wakeup command is not required
before calling the slave's probe. The wakeup command is only needed for
slaves that are in sleep state after receiving the sleep command.
Cc: galak@codeaurora.org
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Sagar Dharia <sdharia@codeaurora.org>
Acked-by: Josh Cartwright <joshc@eso.teric.us>
Signed-off-by: Gilad Avidov <gavidov@codeaurora.org>
Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
index 1d92f51..9493843 100644
--- a/drivers/spmi/spmi.c
+++ b/drivers/spmi/spmi.c
@@ -1,4 +1,5 @@
-/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+/*
+ * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -316,11 +317,6 @@
struct spmi_device *sdev = to_spmi_device(dev);
int err;
- /* Ensure the slave is in ACTIVE state */
- err = spmi_command_wakeup(sdev);
- if (err)
- goto fail_wakeup;
-
pm_runtime_get_noresume(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
@@ -335,7 +331,6 @@
pm_runtime_disable(dev);
pm_runtime_set_suspended(dev);
pm_runtime_put_noidle(dev);
-fail_wakeup:
return err;
}