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authorGilad Avidov <gavidov@codeaurora.org>2015-03-25 11:37:31 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-26 23:51:36 +0100
commit0b9641f5722a9c08cacb534d633ff469ab02a288 (patch)
tree4f34055a6219114cf4ad01244400d35125eadd1f /drivers/spmi
parent03515f323c3766f0a69b62743794577bbd9f87c9 (diff)
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>
Diffstat (limited to 'drivers/spmi')
-rw-r--r--drivers/spmi/spmi.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
index 1d92f5103ebf..94938436aef9 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 @@ static int spmi_drv_probe(struct device *dev)
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 @@ fail_probe:
pm_runtime_disable(dev);
pm_runtime_set_suspended(dev);
pm_runtime_put_noidle(dev);
-fail_wakeup:
return err;
}

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