Merge 4.18-rc5 into usb-next
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@@ -396,8 +396,7 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count,
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loff_t *ppos)
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{
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struct usb_yurex *dev;
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int retval = 0;
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int bytes_read = 0;
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int len = 0;
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char in_buffer[20];
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unsigned long flags;
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@@ -405,26 +404,16 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count,
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mutex_lock(&dev->io_mutex);
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if (!dev->interface) { /* already disconnected */
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retval = -ENODEV;
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goto exit;
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mutex_unlock(&dev->io_mutex);
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return -ENODEV;
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}
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spin_lock_irqsave(&dev->lock, flags);
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bytes_read = snprintf(in_buffer, 20, "%lld\n", dev->bbu);
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len = snprintf(in_buffer, 20, "%lld\n", dev->bbu);
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spin_unlock_irqrestore(&dev->lock, flags);
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if (*ppos < bytes_read) {
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if (copy_to_user(buffer, in_buffer + *ppos, bytes_read - *ppos))
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retval = -EFAULT;
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else {
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retval = bytes_read - *ppos;
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*ppos += bytes_read;
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}
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}
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exit:
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mutex_unlock(&dev->io_mutex);
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return retval;
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return simple_read_from_buffer(buffer, count, ppos, in_buffer, len);
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}
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static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
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