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authorRoger Quadros <rogerq@ti.com>2016-03-30 12:56:29 +0300
committerPeter Chen <peter.chen@nxp.com>2016-04-06 12:15:03 +0300
commit4e332df63487418ec512c3c376c07df9ab3ae035 (patch)
tree05b27c723055b5aaa579243ea197a5a81e772bb1 /drivers/usb/common
parentfa59507f720077a856c9952a31cfd45cd97ef6f9 (diff)
downloadlinux-4e332df63487418ec512c3c376c07df9ab3ae035.tar.xz
usb: otg-fsm: support multiple instances
Move the state_changed variable into struct otg_fsm so that we can support multiple instances. Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/common')
-rw-r--r--drivers/usb/common/usb-otg-fsm.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c
index 504708f59b93..9059b7dc185e 100644
--- a/drivers/usb/common/usb-otg-fsm.c
+++ b/drivers/usb/common/usb-otg-fsm.c
@@ -61,8 +61,6 @@ static int otg_set_protocol(struct otg_fsm *fsm, int protocol)
return 0;
}
-static int state_changed;
-
/* Called when leaving a state. Do state clean up jobs here */
static void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
{
@@ -208,7 +206,6 @@ static void otg_start_hnp_polling(struct otg_fsm *fsm)
/* Called when entering a state */
static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
{
- state_changed = 1;
if (fsm->otg->state == new_state)
return 0;
VDBG("Set state: %s\n", usb_otg_state_string(new_state));
@@ -324,6 +321,7 @@ static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
}
fsm->otg->state = new_state;
+ fsm->state_changed = 1;
return 0;
}
@@ -335,7 +333,7 @@ int otg_statemachine(struct otg_fsm *fsm)
mutex_lock(&fsm->lock);
state = fsm->otg->state;
- state_changed = 0;
+ fsm->state_changed = 0;
/* State machine state change judgement */
switch (state) {
@@ -448,7 +446,7 @@ int otg_statemachine(struct otg_fsm *fsm)
}
mutex_unlock(&fsm->lock);
- VDBG("quit statemachine, changed = %d\n", state_changed);
- return state_changed;
+ VDBG("quit statemachine, changed = %d\n", fsm->state_changed);
+ return fsm->state_changed;
}
EXPORT_SYMBOL_GPL(otg_statemachine);