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usb: gadget: printer: eliminate file global printer_mutex

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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>
This commit is contained in:
Andrzej Pietrasiewicz 2015-03-03 10:52:20 +01:00 committed by Felipe Balbi
parent a844715d2f
commit dec81cf1dc
1 changed files with 0 additions and 3 deletions
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3
drivers/usb/gadget/legacy/printer.c
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@ -48,7 +48,6 @@ USB_GADGET_COMPOSITE_OPTIONS();
#define DRIVER_DESC "Printer Gadget"
#define DRIVER_VERSION "2007 OCT 06"
static DEFINE_MUTEX(printer_mutex);
static const char shortname [] = "printer";
static const char driver_desc [] = DRIVER_DESC;
@ -420,7 +419,6 @@ printer_open(struct inode *inode, struct file *fd)
unsigned long flags;
int ret = -EBUSY;
mutex_lock(&printer_mutex);
dev = container_of(inode->i_cdev, struct printer_dev, printer_cdev);
spin_lock_irqsave(&dev->lock, flags);
@ -436,7 +434,6 @@ printer_open(struct inode *inode, struct file *fd)
spin_unlock_irqrestore(&dev->lock, flags);
DBG(dev, "printer_open returned %x\n", ret);
mutex_unlock(&printer_mutex);
return ret;
}