From: Du Xing duxing2...@gmail.com
In skel_read,the reader blocked in wait_for_completion before submit bulk in
urb.
Using processed_urb is for retaining the completion in the case that
previous interruptible wait in skel_read was interrupted and complete before
next skel_read.
Replacing
From: Du Xing duxing2...@gmail.com
In skel_read,the reader blocked in wait_for_completion before submit bulk in
urb.
Using processed_urb is for retaining the completion in the case that
previous interruptible wait in skel_read was interrupted and complete before
next skel_read.
Replacing
&dev->io_mutex);
spin_lock_init(&dev->err_lock);
init_usb_anchor(&dev->submitted);
- init_completion(&dev->bulk_in_completion);
+ init_waitqueue_head(&dev->bulk_in_wait);
dev->udev = usb_get_dev(interface_to_usbdev(interface));
dev->interface = interface;
---
Du Xing
Thanks
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etion);
- dev->bulk_in_copied = 0;
- dev->processed_urb = 1;
- }
+ spin_unlock_irq(&dev->err_lock);
/* errors must be reported */
rv = dev->errors;
---
Du Xing
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From: Du Xing duxing2...@gmail.com
In skel_read,the reader blocked in wait_for_completion before submit bulk in
urb.
Using processed_urb is totally unnecessary, remove it can fix the bug.
---
Signed-off-by: Du Xing duxing2...@gmail.com
---
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb
