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@@ -24,6 +24,7 @@
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#include <linux/module.h>
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+#include <linux/atomic.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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@@ -65,6 +66,7 @@ struct bcm203x_data {
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unsigned long state;
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struct work_struct work;
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+ atomic_t shutdown;
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struct urb *urb;
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unsigned char *buffer;
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@@ -97,6 +99,7 @@ static void bcm203x_complete(struct urb *urb)
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data->state = BCM203X_SELECT_MEMORY;
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+ /* use workqueue to have a small delay */
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schedule_work(&data->work);
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break;
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@@ -155,7 +158,10 @@ static void bcm203x_work(struct work_struct *work)
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struct bcm203x_data *data =
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container_of(work, struct bcm203x_data, work);
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- if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
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+ if (atomic_read(&data->shutdown))
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+ return;
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+
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+ if (usb_submit_urb(data->urb, GFP_KERNEL) < 0)
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BT_ERR("Can't submit URB");
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}
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@@ -243,6 +249,7 @@ static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id
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usb_set_intfdata(intf, data);
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+ /* use workqueue to have a small delay */
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schedule_work(&data->work);
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return 0;
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@@ -254,6 +261,9 @@ static void bcm203x_disconnect(struct usb_interface *intf)
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BT_DBG("intf %p", intf);
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+ atomic_inc(&data->shutdown);
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+ cancel_work_sync(&data->work);
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+
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usb_kill_urb(data->urb);
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usb_set_intfdata(intf, NULL);
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