From: Pavel Rojtberg <rojtb...@gmail.com>
track the active status of the irq_out URB to prevent submission while
it is active. Failure to do so results in the "URB submitted while
active" warning/ stacktrace.
Also add missing mutex locking around xpad->odata usages.
Signed-off-by: Pavel Rojtberg <rojtb...@gmail.com>
---
drivers/input/joystick/xpad.c | 43 +++++++++++++++++++++++++++++++++++++++----
1 file changed, 39 insertions(+), 4 deletions(-)
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 7d53e8e..5eec515 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -330,6 +330,7 @@ struct usb_xpad {
dma_addr_t idata_dma;
struct urb *irq_out; /* urb for interrupt out report */
+ int irq_out_active; /* we must not use an active URB */
unsigned char *odata; /* output data */
dma_addr_t odata_dma;
struct mutex odata_mutex;
@@ -710,6 +711,7 @@ static void xpad_irq_out(struct urb *urb)
switch (status) {
case 0:
/* success */
+ xpad->irq_out_active = 0;
return;
case -ECONNRESET:
@@ -718,6 +720,7 @@ static void xpad_irq_out(struct urb *urb)
/* this urb is terminated, clean up */
dev_dbg(dev, "%s - urb shutting down with status: %d\n",
__func__, status);
+ xpad->irq_out_active = 0;
return;
default:
@@ -795,6 +798,7 @@ static int xpad_play_effect(struct input_dev *dev, void
*data, struct ff_effect
struct usb_xpad *xpad = input_get_drvdata(dev);
__u16 strong;
__u16 weak;
+ int retval;
if (effect->type != FF_RUMBLE)
return 0;
@@ -802,6 +806,8 @@ static int xpad_play_effect(struct input_dev *dev, void
*data, struct ff_effect
strong = effect->u.rumble.strong_magnitude;
weak = effect->u.rumble.weak_magnitude;
+ mutex_lock(&xpad->odata_mutex);
+
switch (xpad->xtype) {
case XTYPE_XBOX:
xpad->odata[0] = 0x00;
@@ -858,13 +864,25 @@ static int xpad_play_effect(struct input_dev *dev, void
*data, struct ff_effect
break;
default:
+ mutex_unlock(&xpad->odata_mutex);
dev_dbg(&xpad->dev->dev,
"%s - rumble command sent to unsupported xpad type:
%d\n",
__func__, xpad->xtype);
return -EINVAL;
}
- return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
+ if (!xpad->irq_out_active) {
+ retval = usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
+ xpad->irq_out_active = 1;
+ } else {
+ retval = -EIO;
+ dev_dbg(&xpad->dev->dev, "%s - dropped, irq_out is active\n",
+ __func__);
+ }
+
+ mutex_unlock(&xpad->odata_mutex);
+
+ return retval;
}
static int xpad_init_ff(struct usb_xpad *xpad)
@@ -940,7 +958,13 @@ static void xpad_send_led_command(struct usb_xpad *xpad,
int command)
break;
}
- usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ if (!xpad->irq_out_active) {
+ usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ xpad->irq_out_active = 1;
+ } else
+ dev_dbg(&xpad->dev->dev, "%s - dropped, irq_out is active\n",
+ __func__);
+
mutex_unlock(&xpad->odata_mutex);
}
@@ -1028,6 +1052,7 @@ static void xpad_identify_controller(struct usb_xpad
*xpad) { }
static int xpad_open(struct input_dev *dev)
{
struct usb_xpad *xpad = input_get_drvdata(dev);
+ int retval;
/* URB was submitted in probe */
if (xpad->xtype == XTYPE_XBOX360W)
@@ -1038,11 +1063,14 @@ static int xpad_open(struct input_dev *dev)
return -EIO;
if (xpad->xtype == XTYPE_XBOXONE) {
+ mutex_lock(&xpad->odata_mutex);
/* Xbox one controller needs to be initialized. */
xpad->odata[0] = 0x05;
xpad->odata[1] = 0x20;
xpad->irq_out->transfer_buffer_length = 2;
- return usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ retval = usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ mutex_unlock(&xpad->odata_mutex);
+ return retval;
}
return 0;
@@ -1300,7 +1328,14 @@ static int xpad_probe(struct usb_interface *intf, const
struct usb_device_id *id
xpad->odata[10] = 0x00;
xpad->odata[11] = 0x00;
xpad->irq_out->transfer_buffer_length = 12;
- usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+
+ if (!xpad->irq_out_active) {
+ usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ xpad->irq_out_active = 1;
+ } else
+ dev_dbg(&xpad->dev->dev,
+ "%s - dropped, irq_out is active\n", __func__);
+
mutex_unlock(&xpad->odata_mutex);
} else {
xpad->pad_present = 1;
--
1.9.1
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