From: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
In order to avoid re-queueing of the role changing work, we need to clear
the ID change interrupt bit right in the irq handler.
Tested-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
Tested-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
---
drivers/usb/chipidea/core.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 3c3ed77..19ef324 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -273,8 +273,6 @@ static void ci_role_work(struct work_struct *work)
struct ci13xxx *ci = container_of(work, struct ci13xxx, work);
enum ci_role role = ci_otg_role(ci);
- hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS);
-
if (role != ci->role) {
dev_dbg(ci->dev, "switching from %s to %s\n",
ci_role(ci)->name, ci->roles[role]->name);
@@ -325,6 +323,7 @@ static irqreturn_t ci_irq(int irq, void *data)
u32 sts = hw_read(ci, OP_OTGSC, ~0);
if (sts & OTGSC_IDIS) {
+ hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS);
queue_work(ci->wq, &ci->work);
ret = IRQ_HANDLED;
}
--
1.7.10.4
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