usb: gadget: printer: eliminate file global printer_mutex
The mutex is a legacy after semi-automatic Big Kernel Lock removal. printer_open() does its own locking, so no need to duplicate it. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -48,7 +48,6 @@ USB_GADGET_COMPOSITE_OPTIONS();
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#define DRIVER_DESC "Printer Gadget"
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#define DRIVER_VERSION "2007 OCT 06"
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static DEFINE_MUTEX(printer_mutex);
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static const char shortname [] = "printer";
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static const char driver_desc [] = DRIVER_DESC;
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@ -420,7 +419,6 @@ printer_open(struct inode *inode, struct file *fd)
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unsigned long flags;
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int ret = -EBUSY;
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mutex_lock(&printer_mutex);
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dev = container_of(inode->i_cdev, struct printer_dev, printer_cdev);
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spin_lock_irqsave(&dev->lock, flags);
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@ -436,7 +434,6 @@ printer_open(struct inode *inode, struct file *fd)
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spin_unlock_irqrestore(&dev->lock, flags);
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DBG(dev, "printer_open returned %x\n", ret);
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mutex_unlock(&printer_mutex);
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return ret;
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}
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