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greybus: arche-platform: Return immediately if in same state from state change fns

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Have a check inside all individual operational state change functions
to check whether device is in same state, and if yes, then return
immediately.

Testing Done: Tested on DB3.5 platform

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Vaibhav Hiremath 2016-02-22 17:27:24 +05:30 • committed by Greg Kroah-Hartman
commit 599159b687
1 changed files with 9 additions and 0 deletions
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9
drivers/staging/greybus/arche-platform.c
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@ -133,6 +133,9 @@ static int arche_platform_coldboot_seq(struct arche_platform_drvdata *arche_pdat
{
int ret;
if (arche_pdata->state == ARCHE_PLATFORM_STATE_ACTIVE)
return 0;
dev_info(arche_pdata->dev, "Booting from cold boot state\n");
svc_reset_onoff(arche_pdata->svc_reset_gpio,
@ -159,6 +162,9 @@ static int arche_platform_coldboot_seq(struct arche_platform_drvdata *arche_pdat
static void arche_platform_fw_flashing_seq(struct arche_platform_drvdata *arche_pdata)
{
if (arche_pdata->state == ARCHE_PLATFORM_STATE_FW_FLASHING)
return;
dev_info(arche_pdata->dev, "Switching to FW flashing state\n");
svc_reset_onoff(arche_pdata->svc_reset_gpio,
@ -176,6 +182,9 @@ static void arche_platform_fw_flashing_seq(struct arche_platform_drvdata *arche_
static void arche_platform_poweroff_seq(struct arche_platform_drvdata *arche_pdata)
{
if (arche_pdata->state == ARCHE_PLATFORM_STATE_OFF)
return;
/* Send disconnect/detach event to SVC */
gpio_set_value(arche_pdata->wake_detect_gpio, 0);
usleep_range(100, 200);